How to View and Reuse Past Commands in Linux (history)

The history command lists previously executed shell commands, and integrates with shortcuts for quickly reusing them.

Key points

• Run !! to instantly re-run the previous command, often combined with sudo (sudo !!)
• !123 re-runs the command numbered 123 in the history list
• Command history is normally stored per-shell-session and written to a history file (like ~/.bash_history) on exit

Example

history | grep docker