Sysadmin:Knowledge Base/Linux/Basic Tips and Tricks

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Repeating Commands

  • !! repeats the last command entered.
    • Can be used with sudo, i.e.: sudo !! to run the last command with superuser privileges.
  • !string - Type an exclamation point followed by a string of letters that begin a command. The last command that begins with the letters is repeated.
  • !n - Type an exclamation point followed by a number. The command shown on that line number in command history is repeated.

Editing previous command

You can edit the previous command and reenter it using ^old^new. The following command will replace string1 with string2 in the first command that just executed:

srot test.txt
^ro^or