history expansion

Reuse and expand the shell history in sh, bash, zsh, rbash and ksh. More information: https://www.gnu.org/software/bash/manual/html_node/History-Interaction.

• Run the previous command as root (!! is replaced by the previous command):
  sudo !!
• Run a command with the last argument of the previous command:
  {{command}} !$
• Run a command with the first argument of the previous command:
  {{command}} !^
• Run the Nth command of the history:
  !{{n}}
• Run the command n lines back in the history:
  !-{{n}}
• Run the most recent command containing string:
  !?{{string}}?
• Run the previous command, replacing string1 with string2:
  ^{{string1}}^{{string2}}^
• Perform a history expansion, but print the command that would be run instead of actually running it:
  {{!-n}}:p