Quick use of Linux History commands

Use history {$ num} to view the recently used $ num commands. The default value is 500;

1. CTRL + R: (reverse-I-search, the terminal will scroll to display your History commands. When you find the appropriate historical command, you can directly [enter] and run the historical command.

2. Use '! ':
"Success, success": Type !! (Called "progress, progress") to execute the last command in history.
"Digit number": type! Number (for example! 302) will execute 302nd items in the command history file.
"Pipeline string": type! String (such! Rpm) will execute the command that matches the latest near output of the string in the command line.