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Cisco Help and Editing
Enter ? at any prompt to see a complete listing of available commands that can be used at the prompt level. You can also do partial a word to see available commands that start with letters before ? (e.g. s?, cl?, eth?).
When entering commands, you don't have to complete the entire word just enough to make it recognizable to the IOS from any other command. Example: instead of using the show command, you can use sh in place of show and it will work the same.
The ? can also be used to show the next step in the command. If you type a partial command and press the [Tab] key, the command is completed for you automatically.
Router_2(config)# int [Tab] Router_2(config)# interface Router_2(config)# interface ? Async Async interface BVI Bridge-Group Virtual Interface Dialer Dialer interface Ethernet IEEE 802.3 Group-Async Async Group interface Lex Lex interface Loopback Loopback interface Null Null interface Port-channel Ethernet Channel of interfaces Serial Serial Tunnel Tunnel interface Virtual-Template Virtual Template interface Virtual-TokenRing Virtual TokenRing Router_2(config)# interface ethernet ? <0-0> Ethernet interface number Router_2(config)# interface ethernet 0 Router_2(config-if)#
Use the [spacebar] to scroll another page if available commands is longer than one page, use the [enter] key to scroll one line at a time. If help page is scrolled, press any key to return to the command line.
To see how long a router has been up, how it was restarted, the IOS version, number of Interfaces, memory, and config-register setting use the command show version from privileged EXEC mode.
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