Cisco IOS Configuration Fundamentals Command�Reference, Release�12.2
Basic Command-Line Interface Commands
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Basic Command-Line Interface Commands

Table Of Contents

Basic Command-Line Interface Commands

disable

editing

enable

end

exit (EXEC)

exit (global)

full-help

help

history

history size

logout

menu (EXEC)

more begin

more exclude

more include

show begin

show exclude

show history

show include

terminal editing

terminal full-help

terminal history

terminal history size


Basic Command-Line Interface Commands


This chapter describes the commands used to enter and exit the various Cisco IOS configuration command modes. It provides a description of help features, command-line interface (CLI) navigation commands, and the command history feature.

The CLI allows you to enter partial Cisco IOS configuration commands. The software recognizes a command when you enter enough characters of the command to uniquely identify it.

For user interface task information and examples, see the "Using the Command-Line Interface" chapter of the Release 12.2 Cisco IOS Configuration Fundamentals Configuration Guide.

disable

To exit privileged EXEC mode and return to user EXEC mode, or to exit to a lower privilege level, enter the disable EXEC command.

disable [privilege-level]

Syntax Description

privilege-level

(Optional) Specific privilege level (other than user EXEC mode).


Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

Up to 16 security levels can be configured using Cisco IOS software. If such levels are configured on a system, using this command with the privilege-level option allows you to exit to a lower security level. If a level is not specified, the user will exit to the user EXEC mode, which is the default.


Note Five EXEC commands are associated with privilege level 0: disable, enable, exit, help, and logout. If you configure a privilege level greater than 0, these five commands will not be included in the command set for that privilege level.


Examples

In the following example, the user enters privileged EXEC mode using the enable command, then exits back to user EXEC mode using the disable command. Note that the prompt for user EXEC mode is >, and the prompt for privileged EXEC mode is #.

Router> enable
Password: <letmein>
Router# disable
Router>

Related Commands

Command
Description

enable

Enables higher privilege level access, such as privileged EXEC mode.


editing

To reenable Cisco IOS enhanced editing features for a particular line after they have been disabled, use the editing line configuration command. To disable these features, use the no form of this command.

editing

no editing

Syntax Description

This command has no arguments or keywords.

Defaults

Enabled

Command Modes

Line configuration

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

Enhanced editing features are enabled by default. However, there may be situations in which you need to disable these features. The no form of this command disables these enhanced editing features, and the plain form of the command can be used to reenable these features.

Table 3 provides a description of the keys used to enter and edit commands when the editing features are enabled. Ctrl indicates the Control key, which must be pressed simultaneously with its associated letter key. Esc indicates the Escape key, which must be pressed first, followed by its associated letter key. A comma is used in the following table to indicate a key sequence (the comma key should not be pressed). Keys are not case sensitive. Many letters used for CLI navigation and editing were chosen to provide an easy way of remembering their functions. In the following table (Table 3), characters are bolded in the "Function Summary" column to indicate the relation between the letter used and the function.

Table 3 Command Editing Keys and Functions 

Keys
Function Summary
Function Details

Tab

Complete command

Completes a partial command name entry. When you enter a unique set of characters and press the Tab key, the system completes the command name. If you enter a set of characters that could indicate more than one command, the system beeps to indicate an error.
To view the commands which match the set of characters you have entered, enter a question mark (?) immediately following the partial command (no space). The CLI will then list the commands that begin with that string.

Return
(at the command line)

Execute

Executes the command.

Return
(at the --More-- prompt)

Continue

Displays the next line of output.

Space Bar
(at the --More-- prompt)

Continue

Displays the next screen of output. The amount of output you see will depend on the screen depth setting of your terminal.

Delete or Backspace

Backspace

Erases the character to the left of the cursor.

Left Arrow1 or Ctrl-B

Back character

Moves the cursor one character to the left.
When you enter a command that extends beyond a single line, you can press the Left Arrow or Ctrl-B keys repeatedly to scroll back toward the system prompt and verify the beginning of the command entry.

Right Arrow1 or Ctrl-F

Forward character

Moves the cursor one character to the right.

Esc, B

Back word

Moves the cursor back one word.

Esc, F

Forward word

Moves the cursor forward one word.

Ctrl-A

Beginning of line

Moves the cursor to the beginning of the line.

Ctrl-E

End of line

Moves the cursor to the end of the command line.

Ctrl-D

Delete character

Deletes the character at the cursor.

Esc, D

Delete next word

Deletes from the cursor to the end of the word .

Ctrl-W

Delete previous word

Deletes the word to the left of the cursor.

Ctrl-K

Delete line forward

Deletes all characters from the cursor to the end of the command line.

Ctrl-U or Ctrl-X

Delete line backward

Deletes all characters from the cursor back to the beginning of the command line.

Ctrl-T

Transpose characters

Transposes the character to the left of the cursor with the character located at the cursor.

Ctrl-R or Ctrl-L

Redisplay line

Redisplays the system prompt and command line.

Ctrl-V or Esc, Q

Ignore editing

Inserts a code to indicate to the system that the keystroke immediately following should be treated as a command entry, not as an editing key.

Up Arrow1 or Ctrl-P

Previous command

Recalls commands in the history buffer, beginning with the most recent command. Repeat the key sequence to recall successively older commands.

Down Arrow1 or Ctrl-N (next)

Next command

Returns to more recent commands in the history buffer (after recalling commands with the Up Arrow or Ctrl-P). Repeat the key sequence to recall successively more recent commands.

Ctrl-Y

Recall last deleted command

Recalls the most recent entry in the delete buffer. The delete buffer contains the last ten items you have deleted or cut. Ctrl-Y can be used in conjunction with Esc Y.

Esc, Y

Recall next deleted command

Recalls the next entry in the delete buffer. The delete buffer contains the last ten items you have deleted. Press Ctrl-Y first to recall the most recent entry. Then press Esc Y up to nine times to recall the remaining entries in the buffer. If you bypass an entry, continue to press Esc Y to cycle back to it.

Esc, C

Capitalize word

Capitalizes the word from the cursor to the end of the word.

Esc, U

Make word uppercase

Changes all letters from the cursor to the next space on the line appear in uppercase letters.

Esc, L

Make word lowercase

Changes the word to lowercase from the cursor to the end of the word.

1 The arrow keys function only with ANSI-compatible terminals.


Examples

In the following example, enhanced editing mode is disabled on line 3:

Router(config)# line 3
Router(config-line)# no editing

Related Commands

Command
Description

terminal editing

Controls CLI enhanced editing feature for the current terminal session.


enable

To enter privileged EXEC mode, or any other security level set by a system administrator, use the enable EXEC command.

enable [privilege-level]

Syntax Description

privilege-level

(Optional) Privilege level at which to log in.


Defaults

Privilege-level 15 (privileged EXEC)

Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

Entering privileged EXEC mode enables the use of privileged commands. Because many of the privileged commands set operating parameters, privileged access should be password-protected to prevent unauthorized use. If the system administrator has set a password with the enable password global configuration command, you are prompted to enter it before being allowed access to privileged EXEC mode. The password is case sensitive.

If an enable password has not been set, enable mode only can be accessed through the console connection.

Security levels can be set by an administrator using the enable password and privilege level commands. Up to 16 privilege levels can be specified, using the numbers 0 through 15. Using these privilege levels, the administrator can allow or deny access to specific commands. Privilege level 0 is associated with user EXEC mode, and privilege level 15 is associated with privileged EXEC mode.

For more information on defined privilege levels, see the "Passwords and Privileges" chapters of the Cisco IOS Security Configuration Guide and the Cisco IOS Security Command Reference publications.

If a level is not specified when entering the enable command, the user will enter the default mode of privileged EXEC (level 15).

Examples

In the following example, the user enters privileged EXEC mode using the enable command. The system prompts the user for a password before allowing access to the privileged EXEC mode. The password is not printed to the screen. The user then exits back to user EXEC mode using the disable command. Note that the prompt for user EXEC mode is >, and the prompt for privileged EXEC mode is #.

Router> enable
Password: <letmein>
Router# disable

Router>

Related Commands

Command
Description

disable

Exits from privileged EXEC mode to user EXEC mode, or, if privilege levels are set, to the specified privilege level.

enable password

Sets a local password to control access to various privilege levels.

privilege level (global)

Sets a privilege level for a command.

privilege level (line)

Sets a privilege level for a command for a specific line.


end

To end the current configuration session and return to privileged EXEC mode, use the end global configuration command.

end

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values

Command Modes

Global configuration

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

This command will bring you back to privileged EXEC mode regardless of what configuration mode or configuration submode you are in.


Note This global configuration command can be used in any configuration mode.


Use this command when you are done configuring the system and you want to return to EXEC mode to perform verification steps.

Examples

In the following example, the end command is used to exit from ALPS ASCU configuration mode and return to privileged EXEC mode. A show command is used in privileged EXEC mode to verify the configuration.

Router# configure terminal
Router(config)# interface serial 1:1                                                                                              
Router(config-if)# alps ascu 4B                                                                                                
Router(config-alps-ascu)# end
Router# show interface serial 1:1

Related Commands

Command
Description

exit (global)

Exits from the current configuration mode.


exit (EXEC)

To close an active terminal session by logging off the router, use the exit command in EXEC mode.

exit

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values

Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

Use the exit (EXEC) command in EXEC mode to exit the active session (log off the device).

Examples

In the following example, the exit (global) command is used to move from global configuration mode to privileged EXEC mode, the disable command is used to move from privileged EXEC mode to user EXEC mode, and the exit (EXEC) command is used to log off (exit the active session):

Router(config)# exit
Router# disable
Router> exit

Related Commands

Command
Description

disconnect

Disconnects a line.

end

Exits configuration mode, or any of the configuration submodes.

exit (global)

Exits from the current configuration mode to the next highest configuration mode.


exit (global)

To exit any configuration mode to the next highest mode in the CLI mode hierarchy, use the exit command in any configuration mode.

exit

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values

Command Modes

All configuration modes

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The exit command is used in the Cisco IOS CLI to exit from the current command mode to the next highest command mode in the CLI mode hierarchy.

For example, use the exit command in global configuration mode to return to privileged EXEC mode. Use the exit command in interface, line, or router configuration mode to return to global configuration mode. Use the exit command in subinterface configuration mode to return to interface configuration mode. At the highest level, EXEC mode, the exit command will exit the EXEC mode and disconnect from the router interface (see the description of the exit (EXEC) command for details).

Examples

The following example displays an exit from the subinterface configuration mode to return to the interface configuration mode:

Router(config-subif)# exit
Router(config-if)#

The following example displays an exit from the interface configuration mode to return to the global 
configuration mode:

Router(config-if)# exit
Router(config)#

Related Commands

Command
Description

disconnect

Disconnects a line.

end

Exits from any configuration mode to privileged EXEC mode.

exit (EXEC)

Closes the active terminal session by logging off the router.


full-help

To get help for the full set of user-level commands, use the full-help line configuration command.

full-help

Syntax Description

This command has no arguments or keywords.

Defaults

Disabled

Command Modes

Line configuration

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The full-help command enables (or disables) an unprivileged user to see all of the help messages available. It is used with the show ? command.

Examples

In the following example, the show ? command is used first with full-help disabled. Then full-help is enabled for the line, and the show ? command is used again to demonstrate the additional help output that is displayed.

Router> show ?

  bootflash  Boot Flash information
  calendar   Display the hardware calendar
  clock      Display the system clock
  context    Show context information
  dialer     Dialer parameters and statistics
  history    Display the session command history
  hosts      IP domain-name, lookup style, nameservers, and host table
  isdn       ISDN information
  kerberos   Show Kerberos Values
  modemcap   Show Modem Capabilities database
  ppp        PPP parameters and statistics
  rmon       rmon statistics
  sessions   Information about Telnet connections
  snmp       snmp statistics
  terminal   Display terminal configuration parameters
  users      Display information about terminal lines
  version    System hardware and software status

Router> enable
Password:<letmein>
Router# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)# line console 0
Router(config-line)# full-help
Router(config-line)# ^Z
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router# disable
Router> show ?

  access-expression  List access expression
  access-lists       List access lists
  aliases            Display alias commands
  apollo             Apollo network information
  appletalk          AppleTalk information
  arp                ARP table
  async              Information on terminal lines used as router interfaces
  bootflash          Boot Flash information
  bridge             Bridge Forwarding/Filtering Database [verbose]
  bsc                BSC interface information
  bstun              BSTUN interface information
  buffers            Buffer pool statistics
  calendar           Display the hardware calendar
 .
 .
 .
  translate          Protocol translation information
  ttycap             Terminal capability tables
  users              Display information about terminal lines
  version            System hardware and software status
  vines              VINES information
  vlans              Virtual LANs Information
  whoami             Info on current tty line
  x25                X.25 information
  xns                XNS information
  xremote            XRemote statistics

Related Commands

Command
Description

help

Displays a brief description of the help system.


help

To display a brief description of the help system, enter the help command.

help

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values

Command Modes

All command modes

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The help command provides a brief description of the context-sensitive help system, which functions as follows:

To list all commands available for a particular command mode, enter a question mark (?) at the system prompt.

To obtain a list of commands that begin with a particular character string, enter the abbreviated command entry immediately followed by a question mark (?). This form of help is called word help, because it lists only the keywords or arguments that begin with the abbreviation you entered.

To list the keywords and arguments associated with a command, enter a question mark (?) in place of a keyword or argument on the command line. This form of help is called command syntax help, because it lists the keywords or arguments that apply based on the command, keywords, and arguments you have already entered.

Examples

In the following example, the help command is used to display a brief description of the help system:

Router# help

Help may be requested at any point in a command by entering
a question mark '?'. If nothing matches, the help list will
be empty and you must backup until entering a '?' shows the
available options.
Two styles of help are provided:
1. Full help is available when you are ready to enter a
   command argument (e.g. 'show ?') and describes each possible
   argument.
2. Partial help is provided when an abbreviated argument is entered
   and you want to know what arguments match the input
   (e.g. 'show pr?'.)

The following example shows how to use word help to display all the privileged EXEC commands that begin with the letters "co". The letters entered before the question mark are reprinted on the next command line to allow the user to continue entering the command.

Router# co?
configure  connect  copy
Router# co

The following example shows how to use command syntax help to display the next argument of a partially complete access-list command. One option is to add a wildcard mask. The <cr> symbol indicates that the other option is to press Return to execute the command without adding any more keywords or arguments. The characters entered before the question mark are reprinted on the next command line to allow the user to continue entering the command or to execute that command as it is.

Router(config)# access-list 99 deny 131.108.134.234 ?
  A.B.C.D  Mask of bits to ignore
  <cr>
Router(config)# access-list 99 deny 131.108.134.234

Related Commands

Command
Description

full-help

Gets help for the full set of user-level commands.


history

To enable the command history function, use the history line configuration command. To disable the command history feature, use the no form of this command.

history

no history

Syntax Description

This command has no arguments or keywords.

Defaults

Enabled, ten command lines in buffer

Command Modes

Line configuration

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The command history feature provides a record of EXEC commands that you have entered. This feature is particularly useful for recalling long or complex commands or entries, including access lists.

To change the number of command lines that the system will record in its history buffer, use the history size line configuration command.

The history command enables the history function with the last buffer size specified or, if there was not a prior setting, with the default of ten lines. The no history command disables the history feature.

The show history EXEC command will list the commands you have entered, but you can also use your keyboard to display individual commands. Table 4 lists the keys you can use to recall commands from the command history buffer.

Table 4 History Keys

Key(s)
Functions

Ctrl-P or Up Arrow1

Recalls commands in the history buffer in a backward sequence, beginning with the most recent command. Repeat the key sequence to recall successively older commands.

Ctrl-N or Down Arrow1

Returns to more recent commands in the history buffer after recalling commands with Ctrl-P or the Up Arrow. Repeat the key sequence to recall successively more recent commands.

1 The arrow keys function only with ANSI-compatible terminals.


Examples

In the following example, line 4 is configured with a history buffer size of 35 lines:

Router(config)# line 4
Router(config-line)# history size 35

Related Commands

Command
Description

history size

Sets the command history buffer size for a particular line.

show history

Lists the commands you have entered in the current EXEC session.

terminal history

Enables the command history feature for the current terminal session or changes the size of the command history buffer for the current terminal session.


history size

To change the command history buffer size for a particular line, use the history size line configuration command. To reset the command history buffer size to ten lines, use the no form of this command.

history size number-of-lines

no history size

Syntax Description

number-of-lines

Specifies the number of command lines that the system will record in its history buffer. The range is from 0 to 256. The default is ten.


Defaults

Ten command lines

Command Modes

Line configuration

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The history size command should be used in conjunction with the history and show history commands. The history command enables or disables the command history function. The show history command lists the commands you have entered in the current EXEC session. The number of commands that the history buffer will show is set by the history size command.


Note The history size command only sets the size of the buffer; it does not reenable the history feature. If the no history command is used, the history command must be used to reenable this feature.


Examples

The following example displays line 4 configured with a history buffer size of 35 lines:

Router(config)# line 4
Router(config-line)# history size 35

Related Commands

Command
Description

history

Enables or disables the command history function.

show history

Lists the commands you have entered in the current EXEC session.

terminal history size

Enables the command history function for the current terminal session or changes the size of the command history buffer for the current terminal session.


logout

To close an active terminal session by logging off the router, use the logout command in user EXEC mode.

logout

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values.

Command Modes

User EXEC

Command History

Release
Modification

10.0

This command was introduced.


Examples

In the following example, the exit (global) command is used to move from global configuration mode to privileged EXEC mode, the disable command is used to move from privileged EXEC mode to user EXEC mode, and the logout command is used to log off (exit from the active session):

Router(config)# exit
Router# disable
Router> logout 

Related Commands

Command
Description

exit (global)

Exits any configuration mode to the next highest mode in the CLI mode hierarchy.


menu (EXEC)

To display a preconfigured user menu, use the menu command in user or privileged EXEC mode.

menu menu-name

Syntax Description

menu-name

The name of the menu.


Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

A user menu is a type of user interface where text descriptions of actions to be performed are displayed to the user. The user can use the menu to select services and functions without having to know the details of command-line interface (CLI) commands.

Menus can be created for users in global configuration mode, using the commands listed in the "Related Commands" section. The description of these commands can be found in the "Connection, Menu, and System Banner Commands" chapter of this document.

A menu can be invoked at either the user or privileged EXEC level, but if an item in the menu contains a privileged EXEC command, the user must be logged in at the privileged level for the command to succeed.

Examples

The following example invokes a menu named OnRamp:

Router> menu OnRamp

      Welcome to OnRamp Internet Services
                                
       Type a number to select an option;
            Type 9 to exit the menu.

1     Read email

2     UNIX Internet access

3     Resume UNIX connection


6     Resume next connection

9     Exit menu system

Related Commands

Command
Description

menu clear-screen

Clears the terminal screen before displaying a menu.

menu command

Specifies underlying commands for user interface menus.

menu default

Specifies the menu item to use as the default.

menu line-mode

Requires the user to press Enter after specifying an option number.

menu options

Sets options for items in user interface menus.

menu prompt

Specifies the prompt for a user interface menu.

menu single-space

Displays menu items single-spaced rather than double-spaced.

menu status-line

Displays a line of status information about the current user at the top of a menu

menu text

Specifies the text of a menu item in a user interface menu.

menu title

Creates a title, or banner, for a user menu.

no menu

Deletes a specified menu from a menu configuration.


more begin

To search the output of any more command, use the more begin command in EXEC mode. This command begins unfiltered output of the more command with the first line that contains the regular expression you specify.

more file-url | begin regular-expression

Syntax Description

file-url

The Universal Resource Locator (url) of the file to display. More commands are advanced show commands; for details, see the command reference page in this book for the more command.

|

A vertical bar (the "pipe" symbol) indicates that an output processing specification follows.

regular-expression

Any regular expression found in more command output.

/

Specifies a search at a --More-- prompt that begins unfiltered output with the first line that contains the regular expression.

-

Specifies a filter at a --More-- prompt that only displays output lines that do not contain the regular expression.

+

Specifies a filter at a --More-- prompt that only displays output lines that contain the regular expression.


Command Modes

EXEC

Command History

Release
Modification

11.3 AA

The more command was introduced.

12.0(1)T

This extension of the more command was introduced.


Usage Guidelines

The regular-expression argument is case sensitive and allows for complex matching requirements.

You can specify a new search at every --More-- prompt.

To search the remaining output of the more command, use the following command at the --More-- prompt:

/regular-expression

To filter the remaining output of the more command, use one of the following commands at the --More-- prompt:

-regular-expression

+regular-expression

When output volume is large, the search can produce long lists of output. To interrupt the output, press Ctrl-^ (Ctrl-Shift-6) or Ctrl-Z.


Note Once you specify a filter for a more command, you cannot specify another filter at a --More-- prompt. The first specified filter remains until the more command output finishes or until you interrupt the output. The use of the keyword begin does not constitute a filter.


Because prior output is not saved, you cannot search or filter backward through prior output.

Examples

The following is partial sample output of the more nvram:startup-config | begin command that begins unfiltered output with the first line that contain the regular expression "ip." At the --More-- prompt, the user specifies a filter to exclude output lines that contain the regular expression "ip."

router# more nvram:startup-config | begin ip

ip subnet-zero
ip domain-name cisco.com
ip name-server 198.92.30.32
ip name-server 171.69.2.132
!
isdn switch-type primary-5ess
.
.
.
interface Ethernet1
 ip address 5.5.5.99 255.255.255.0
 --More-- 
-ip
filtering...
 media-type 10BaseT
!
interface Serial0:23
 encapsulation frame-relay
 no keepalive
 dialer string 4001
 dialer-group 1
 isdn switch-type primary-5ess
 no fair-queue

Related Commands

Command
Description

more exclude

Filters more command output so that it excludes lines that contain a particular regular expression.

more include

Filters more command output so that it displays only lines that contain a particular regular expression.

show begin

Searches the output of any show command and displays the output from the first instance of a specified string.

show exclude

Filters show command output so that it excludes lines that contain a particular regular expression.

show include

Filters show command output so that it displays only lines that contain a particular regular expression.


more exclude

To filter more command output so that it excludes lines that contain a particular regular expression, use the more exclude command in EXEC mode.

more file-url | exclude regular-expression

Syntax Description

file-url

The Universal Resource Locator (url) of the file to display. More commands are advanced show commands; for details, see the command reference page in this book for the more command.

|

A vertical bar (the "pipe" symbol) indicates that an output processing specification follows.

regular-expression

Any regular expression found in more command output.

/

Specifies a search at a --More-- prompt that begins unfiltered output with the first line that contains the regular expression.


Command Modes

EXEC

Command History

Release
Modification

11.3 AA

The more command was introduced.

12.0(1)T

This extension of the more command was introduced.


Usage Guidelines

The regular-expression argument is case sensitive and allows for complex matching requirements.

You can specify a new search at any --More-- prompt. To search the remaining output of the more command, use the following command at the --More-- prompt:

/regular-expression

When output volume is large, the search can produce long lists of output. To interrupt the output, press Ctrl-^ (Ctrl-Shift-6) or Ctrl-Z.

Because prior output is not saved, you cannot search or filter backward through prior output.

Examples

The following is partial sample output of the more nvram:startup-config | exclude command. The use of | exclude service in the command specifies a filter that excludes lines that contain the regular expression "service." At the --More-- prompt, the user searches for the regular expression "Dialer1," which continues filtered output with the first line that contains "Dialer1."

router# more nvram:startup-config | exclude service
!
version 12.0
!
hostname router
!
boot system flash
no logging buffered
!
ip subnet-zero
ip domain-name cisco.com
.
.
.
--More--
/Dialer1
filtering...
interface Dialer1
 no ip address
 no ip directed-broadcast
 dialer in-band
 no cdp enable

Related Commands

Command
Description

more begin

Begins unfiltered output of the more command with the first line that contains the regular expression you specify.

more include

Filters more command output so that it displays only lines that contain a particular regular expression.

show begin

Searches the output of any show command and displays the output from the first instance of a specified string.

show exclude

Filters show command output so that it excludes lines that contain a particular regular expression.

show include

Filters show command output so that it displays only lines that contain a particular regular expression.


more include

To filter more command output so that it displays only lines that contain a particular regular expression, use the more include command in EXEC mode.

more file-url | include regular-expression

Syntax Description

file-url

The Universal Resource Locator (url) of the file to display. More commands are advanced show commands; for details, see the command reference page in this book for the more command.

|

A vertical bar (the "pipe" symbol) indicates that an output processing specification follows.

regular-expression

Any regular expression found in more command output.

/

Specifies a search at a --More-- prompt that begins unfiltered output with the first line that contains the regular expression.


Command Modes

EXEC

Command History

Release
Modification

11.3 AA

The more command was introduced.

12.0(1)T

This extension of the more command was introduced.


Usage Guidelines

The regular-expression argument is case sensitive and allows for complex matching requirements.

You can specify a new search at any --More-- prompt. To search the remaining output of the more command, use the following syntax at the --More-- prompt:

/regular-expression

When output volume is large, the search can produce long lists of output. To interrupt the output, press Ctrl-^ (Ctrl-Shift-6) or Ctrl-Z.

Because prior output is not saved, you cannot search or filter backward through prior output.

Examples

The following is partial sample output of the more nvram:startup-config | include command. It only displays lines that contain the regular expression "ip."

router# more nvram:startup-config | include ip

ip subnet-zero
ip domain-name cisco.com
ip name-server 198.92.30.32
ip name-server 171.69.2.132
 description ip address 172.21.53.199 255.255.255.0
 ip address 172.21.53.199 255.255.255.0

Related Commands

Command
Description

more begin

Begins unfiltered output of the more command with the first line that contains the regular expression you specify.

more exclude

Filters more command output so that it excludes lines that contain a particular regular expression.

show begin

Searches the output of any show command and displays the output from the first instance of a specified string.

show exclude

Filters show command output so that it excludes lines that contain a particular regular expression.

show include

Filters show command output so that it displays only lines that contain a particular regular expression.


show begin

To begin the output of any show command from a specified string, use the show begin command in EXEC mode.

show any-command | begin regular-expression

Syntax Description

any-command

Any supported show command.

|

A vertical bar (the "pipe" symbol) indicates that an output processing specification follows.

regular-expression

Any regular expression found in show command output. The show output will begin from the first instance of this string (output prior to this string will not be printed to the screen). The string is case-sensitive. Use parenthesis to indicate a literal use of spaces.

/

Specifies a search at a --More-- prompt that begins unfiltered output with the first line that contains the regular expression.

-

Specifies a filter at a --More-- prompt that only displays output lines that do not contain the regular expression.

+

Specifies a filter at a --More-- prompt that only displays output lines that contain the regular expression.


Command Modes

EXEC

Command History

Release
Modification

8.3

The show command was introduced.

12.0(1)T

This extension of the show command was introduced.


Usage Guidelines

The regular-expression argument is case sensitive and allows for complex matching requirements. Use parenthesis to indicate a literal use of spaces. For example, | begin u indicates that the show output should begin with any line that contains a u; | begin ( u) indicates that the show output should begin with any line that contains a space and a u together (line has a word that begins with a lowercase u).

To search the remaining output of the show command, use the following command at the --More-- prompt:

/regular-expression

You can specify a filtered search at any --More-- prompt. To filter the remaining output of the show command, use one of the following commands at the --More-- prompt:

-regular-expression

+regular-expression

When output volume is large, the search can produce long lists of output. To interrupt the output, press Ctrl-^ (Ctrl-Shift-6) or Ctrl-z.


Note Once you specify a filter for a show command, you cannot specify another filter at the next --More-- prompt. The first specified filter remains until the more command output finishes or until you interrupt the output. The use of the keyword begin does not constitute a filter.


Because prior output is not saved, you cannot search or filter backward through prior output.


Note A few show commands that have long output requirements do not require user input at the --More-- prompt to jump to the next table of output; these types of output require you to enter the same number of Ctrl-^ or Ctrl-Z combinations as there are --More-- prompts to completely abort output.


Examples

The following is partial sample output of the show interface | begin command that begins unfiltered output with the first line that contains the regular expression "Ethernet." At the --More-- prompt, the user specifies a filter to show only the lines in the remaining output that contain the regular expression "Serial."

router# show interface | begin Ethernet
Ethernet0 is up, line protocol is up
Hardware is Lance, address is 0060.837c.6399 (bia 0060.837c.6399)
  Description: ip address is 172.1.2.14 255.255.255.0
  Internet address is 172.1.2.14/24
.
.
.
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
--More--
+Serial
filtering...
Serial1 is up, line protocol is up
Serial2 is up, line protocol is up
Serial3 is up, line protocol is down
Serial4 is down, line protocol is down
Serial5 is up, line protocol is up
Serial6 is up, line protocol is up
Serial7 is up, line protocol is up

Related Commands

Command
Description

more begin

Begins unfiltered output of the more command with the first line that contains the regular expression you specify.

more exclude

Filters more command output so that it excludes lines that contain a particular regular expression.

more include

Filters more command output so that it displays only lines that contain a particular regular expression.

show exclude

Filters show command output so that it excludes lines that contain a particular regular expression.

show include

Filters show command output so that it displays only lines that contain a particular regular expression.


show exclude

To filter show command output so that it excludes lines that contain a particular regular expression, use the show exclude command in EXEC mode.

show any-command | exclude regular-expression

Syntax Description

any-command

Any supported show command.

|

A vertical bar (the "pipe" symbol) indicates that an output processing specification follows.

regular-expression

Any regular expression found in show command output.

/

Specifies a search at a --More-- prompt that begins unfiltered output with the first line that contains the regular expression.


Command Modes

EXEC

Command History

Release
Modification

8.3

The show command was introduced.

12.0(1)T

This extension of the show command was introduced.


Usage Guidelines

The regular-expression argument is case sensitive and allows for complex matching requirements.

You can specify a new search at every --More-- prompt. To search the remaining output of the show command, use the following syntax at the --More-- prompt:

/regular-expression

When output volume is large, the search can produce long lists of output. To interrupt the output, press Ctrl-^ (Ctrl-Shift-6) or Ctrl-Z.

Because prior output is not saved, you cannot search or filter backward through prior output.


Note A few show commands that have long output requirements do not require user input at the --More-- prompt to jump to the next table of output; these types of output require you to enter the same number of Ctrl-^ or Ctrl-Z combinations as there are --More-- prompts to completely abort output.


Examples

The following is partial sample output of the show | exclude command used with the show buffers command. It excludes lines that contain the regular expression "0 misses." At the --More-- prompt, the user searches for the regular expression "Serial0," which continues the filtered output with the first line that contains "Serial0."

router# show buffers | exclude 0 misses

Buffer elements:
     398 in free list (500 max allowed)
Public buffer pools:
Small buffers, 104 bytes (total 50, permanent 50):
     50 in free list (20 min, 150 max allowed)
     551 hits, 3 misses, 0 trims, 0 created
Big buffers, 1524 bytes (total 50, permanent 50):
     49 in free list (5 min, 150 max allowed)
Very Big buffers, 4520 bytes (total 10, permanent 10):
.
.
.
Huge buffers, 18024 bytes (total 0 permanent 0):
     0 in free list (0 min, 4 max allowed)
--More--
/Serial0
filtering...
Serial0 buffers, 1543 bytes (total 64, permanent 64):
     16 in free list (0 min, 64 max allowed)
     48 hits, 0 fallbacks

Related Commands

Command
Description

more begin

Begins unfiltered output of the more command with the first line that contains the regular expression you specify.

more exclude

Filters more command output so that it excludes lines that contain a particular regular expression.

more include

Filters more command output so that it displays only lines that contain a particular regular expression.

show begin

Searches the output of any show command and displays the output from the first instance of a specified string.

show include

Filters show command output so that it displays only lines that contain a particular regular expression.


show history

To list the commands you have entered in the current EXEC session, use the show history EXEC command.

show history

Syntax Description

This command has no arguments or keywords.

Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The command history feature provides a record of EXEC commands you have entered. The number of commands that the history buffer will record is determined by the history size line configuration command or the terminal history size EXEC command.

Table 5 lists the keys and functions you can use to recall commands from the command history buffer.

 

Table 5 History Keys

Key
Function

Ctrl-P or Up Arrow1

Recalls commands in the history buffer in a backward sequence, beginning with the most recent command. Repeat the key sequence to recall successively older commands.

Ctrl-N or Down Arrow1

Returns to more recent commands in the history buffer after recalling commands with Ctrl-P or the Up Arrow. Repeat the key sequence to recall successively more recent commands.

1 The arrow keys function only with ANSI-compatible terminals.


 

Examples

The following is sample output from the show history command, which lists the commands the user has entered in EXEC mode for this session:

Router# show history
  help
  where
  show hosts
  show history
Router# 

Related Commands

Command
Description

history size

Enables the command history function, or changes the command history buffer size for a particular line.

terminal history size

Enables the command history feature for the current terminal session, or changes the size of the command history buffer for the current terminal session.


show include

To filter show command output so that it only displays lines that contain a particular regular expression, use the show include command in EXEC mode.

show any-command | include regular-expression

Syntax Description

any-command

Any supported show command.

|

A vertical bar (the "pipe" symbol) indicates that an output processing specification follows.

regular-expression

Any regular expression found in show command output. Use parenthesis to include spaces in the expression.

/

Specifies a search at a --More-- prompt that begins unfiltered output with the first line that contains the regular expression.


Command Modes

EXEC

Command History

Release
Modification

8.3

The show command was introduced.

12.0(1)T

This extension of the show command was introduced.


Usage Guidelines

The regular-expression argument is case sensitive and allows for complex matching requirements.

You can specify a new search at every --More-- prompt. To search the remaining output of the show command, use the following syntax at the --More-- prompt:

/regular-expression

When output volume is large, the search can produce long lists of output. To interrupt the output, press Ctrl-^ (Ctrl-Shift-6) or Ctrl-Z.

Because prior output is not saved, you cannot search or filter backward through prior output.


Note A few show commands that have long output requirements do not require user input at the --More-- prompt to jump to the next table of output; these types of output require you to enter the same number of Ctrl-^ or Ctrl-Z combinations as there are --More-- prompts to completely abort output.


Examples

The following is partial sample output of the show interface | include command. It displays only lines that contain the regular expression "( is )." The parentheses force the inclusion of the spaces before and after "is." Use of the parenthesis ensures that only lines containing "is" with a space both before and after it will be included in the output. Lines with words like "disconnect" will be excluded because there are not spaces around the instance of the string "is".

router# show interface | include ( is )

ATM0 is administratively down, line protocol is down
  Hardware is ATMizer BX-50
Dialer1 is up (spoofing), line protocol is up (spoofing)
  Hardware is Unknown
  DTR is pulsed for 1 seconds on reset
Ethernet0 is up, line protocol is up
  Hardware is Lance, address is 0060.837c.6399 (bia 0060.837c.6399)
  Internet address is 172.21.53.199/24
Ethernet1 is up, line protocol is up
  Hardware is Lance, address is 0060.837c.639c (bia 0060.837c.639c)
  Internet address is 5.5.5.99/24
Serial0:0 is down, line protocol is down
  Hardware is DSX1
.
.
.
 --More-- 

At the --More-- prompt, the user searches for the regular expression "Serial0:13", which continues filtered output with the first line that contains "Serial0:13."

/Serial0:13
filtering...
Serial0:13 is down, line protocol is down
  Hardware is DSX1
  Internet address is 11.0.0.2/8
     0 output errors, 0 collisions, 2 interface resets
  Timeslot(s) Used:14, Transmitter delay is 0 flags

Related Commands

Command
Description

more begin

Begins unfiltered output of the more command with the first line that contains the regular expression you specify.

more exclude

Filters more command output so that it excludes lines that contain a particular regular expression.

more include

Filters more command output so that it displays only lines that contain a particular regular expression.

show begin

Searches the output of any show command and displays the output from the first instance of a specified string.

show exclude

Filters show command output so that it excludes lines that contain a particular regular expression.


terminal editing

To reenable the enhanced editing mode for only the current terminal session, use the terminal editing EXEC command. To disable the enhanced editing mode on the current line, use the no form of this command.

terminal editing

terminal no editing

Syntax Description

This command has no arguments or keywords.

Defaults

Enabled

Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

This command is identical to the editing EXEC mode command, except that it controls (enables or disables) enhanced editing for only the terminal session you are using. For a description of the available editing keys, see the description of the editing command in this chapter.

Examples

In the following example, enhanced editing mode is reenabled for only the current terminal session:

Router> terminal editing

Related Commands

Command
Description

editing

Controls CLI enhanced editing features for a particular line.


terminal full-help

To get help for the full set of user-level commands, use the terminal full-help EXEC mode command.

terminal full-help

Syntax Description

This command has no arguments or keywords.

Defaults

Disabled

Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The terminal full-help command enables a user to see all of the help messages available from the terminal. It is used with the show ? command.

Examples

In the following example, the difference between the output of the show ? command before and after using the terminal full-help command is shown:

Router> show ?

  bootflash  Boot Flash information
  calendar   Display the hardware calendar
  clock      Display the system clock
  context    Show context information
  dialer     Dialer parameters and statistics
  history    Display the session command history
  hosts      IP domain-name, lookup style, nameservers, and host table
  isdn       ISDN information
  kerberos   Show Kerberos Values
  modemcap   Show Modem Capabilities database
  ppp        PPP parameters and statistics
  rmon       rmon statistics
  sessions   Information about Telnet connections
  snmp       snmp statistics
  terminal   Display terminal configuration parameters
  users      Display information about terminal lines
  version    System hardware and software status
Router> terminal full-help
Router> show ?

  access-expression  List access expression
  access-lists       List access lists
  aliases            Display alias commands
  apollo             Apollo network information
  appletalk          AppleTalk information
  arp                ARP table
  async              Information on terminal lines used as router interfaces
  bootflash          Boot Flash information
  bridge             Bridge Forwarding/Filtering Database [verbose]
  bsc                BSC interface information
  bstun              BSTUN interface information
  buffers            Buffer pool statistics
  calendar           Display the hardware calendar
  cdp                CDP information
  clns               CLNS network information
  clock              Display the system clock
  cls                DLC user information
  cmns               Connection-Mode networking services (CMNS) information
  compress           Show compression statistics.
  .
  .
  .
  x25                X.25 information
  xns                XNS information
  xremote            XRemote statistics

Related Commands

Command
Description

full-help

Gets help for the full set of user-level commands.

help

Displays a brief description of the help system.


terminal history

To enable the command history feature for the current terminal session, use the terminal history command in user EXEC mode or privileged EXEC mode. To disable the command history feature, use the no form of this command.

terminal history

terminal no history

Syntax Description

This command has no arguments or keywords.

Defaults

Enabled, history buffer of 10 lines

Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The history feature provides a record of commands you have entered. This feature is particularly useful for recalling long or complex commands or entries for the purposes of modifying them slightly and reexecuting them.

The terminal history command enables the command history feature with the default buffer size or the last buffer size specified using the terminal history size command.

Table 6 lists the keys and functions you can use to recall commands from the history buffer.

Table 6 History Keys

Key(s)
Function

Ctrl-P or Up Arrow1

Recalls commands in the history buffer in a backward sequence, beginning with the most recent command. Repeat the key sequence to recall successively older commands.

Ctrl-N or Down Arrow1

Returns to more recent commands in the history buffer after recalling commands with Ctrl-P or the Up Arrow. Repeat the key sequence to recall successively more recent commands.

1 The arrow keys function only with ANSI-compatible terminals.


Examples

In the following example, the command history feature is disabled for the current terminal session:

Router> terminal no history

Related Commands

Command
Description

history

Enables the command history function, or changes the command history buffer size for a particular line.

show history

Lists the commands you have entered in the current EXEC session.

terminal history size

Sets the size of the history buffer for the command history feature for the current terminal session.


terminal history size

To change the size of the command history buffer for the current terminal session, use the terminal history size EXEC mode command. To reset the command history buffer to its default size of 10 lines, use the no form of this command.

terminal history size number-of-lines

terminal no history size

Syntax Description

number-of-lines

Number of command lines that the system will record in its history buffer. The range is from 0 to 256. The default is 10.


Defaults

10 lines of command history

Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

The history feature provides a record of commands you have entered. This feature is particularly useful for recalling long or complex commands or entries for the purposes of modifying them slightly and reissuing them.

The terminal history size command enables the command history feature and sets the command history buffer size. The terminal no history size command resets the buffer size to the default of 10 command lines.

Table 6 lists the keys and functions you can use to recall commands from the history buffer. When you use these keys, the commands recalled will be from EXEC mode if you are in EXEC mode, or from all configuration modes if you are in any configuration mode.

Table 7 History Keys

Key
Function

Ctrl-P or Up Arrow1

Recalls commands in the history buffer in a backward sequence, beginning with the most recent command. Repeat the key sequence to recall successively older commands.

Ctrl-N or Down Arrow1

Returns to more recent commands in the history buffer after recalling commands with Ctrl-P or the Up Arrow. Repeat the key sequence to recall successively more recent commands.

1 The arrow keys function only with ANSI-compatible terminals.


In EXEC mode, you can also use the show history command to show the contents of the command history buffer.

To check the current settings for the command history feature on your line, use the show line command.

Examples

In the following example, the number of command lines recorded is set to 15 for the current terminal session. The user then checks to see what line he/she is connected to using the show users command. The user uses this line information to issue the show line command. (In this example, the user uses the show begin option in the show line command to start the output at the "Editing is enabled/disabled" line.)

Router# terminal history size 15
Router# show users

    Line       User       Host(s)              Idle       Location
* 50 vty 0     admin      idle                 00:00:00 
! the * symbol indicates the active terminal session for the user (line 50)

Router# show line 50 | begin Editing

Editing is enabled.
! the following line shows the history settings for the line
History is enabled, history size is 15.
DNS resolution in show commands is enabled
Full user help is disabled
Allowed transports are telnet.  Preferred is none.
No output characters are padded
No special data dispatching characters

Related Commands

Command
Description

history

Enables the command history function, or changes the command history buffer size for a particular line.

show begin

Searches the output of any show command and displays the output from the first instance of a specified string.

show history

Lists the commands you have entered in the current EXEC session.

terminal history

Enables the command history feature for the current terminal session.