See this page as a slide show

History

CS155 History

History

• Most shells keep a history of the commands you have used. This history can be used to save time by searching for commands that you’ve already typed in.
• history – list command history
• up arrow (↑), down arrow (↓) – scroll up and down through history list (might need to shift-up shift-down)
• Esc-P, Esc-N – jump to line in history beginning with what you’ve already typed

History Continued

• Several symbols exist to speed things up.
  • !! – repeat last command
  • !a – re-do last command that begins with a
  • !-2 – do the command two commands ago
• Pressing Tab while entering a path will attempt to complete the path you have begun to type.

Modification

After you’ve summoned the old command using arrow keys, you can modify it using arrows, backspace, and typing.

This is a great way to build up a command piece-by-piece.