Cisco WS-C2980G-A Software Guide - Page 40

History Substitution Chapter 2 Using the Command-Line Interface History Substitution The history buffer stores the last 20 commands that you entered during a terminal session. History substitution allows you to repeat these commands using special abbreviated commands, that are similar to those used on the UNIX command line. Table 2-2 lists the history substitution commands. Table 2-2 History Substitution Commands Command Function To repeat recent commands: !! Repeats the most recent command. !-nn Repeats the nnth most recent command. !n Repeats command n. !aaa Repeats the command beginning with string aaa. !?aaa Repeats the command containing the string aaa. To modify and repeat the most recent command: ^aaa^bbb Replaces the string aaa with the string bbb in the most recent command. To add a string to the end of a previous command and repeat it: !!aaa Adds string aaa to the end of the most recent command. !n aaa Adds string aaa to the end of command n. !aaa bbb Adds string bbb to the end of the command beginning with string aaa. !?aaa bbb Adds string bbb to the end of the command containing the string aaa. Abbreviating a Command When typing a command, you can abbreviate any command or keyword to the number of characters that uniquely define the command. For example, you can abbreviate the show command to sh. After entering the command at the system prompt, press Return to execute the command. Completing a Partial Command The Tab key allows you to use the command-completion feature. When you enter a unique partial character string and press Tab, the system completes the command or keyword on the command line. For example, if you enter co and press the Tab key, the system completes the command as configure because it is the only command that matches the criteria. Scrolling Through Command Output When the output of a command fills more than one terminal screen, the output is displayed through the More program; a ---More--- prompt is displayed at the bottom of the screen. The More program is used for any output that has more lines than can be displayed on the terminal screen, including show command output. To view the next line or screen, use the following tasks. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-6 78-15486-01