Historical command History

The history command is saved in the user's home directory ~/.bash_history after the user logs off

History #查看系统中 the historical command for real-time caching , not exactly the same as the content in. bash_history

History-c #清空历史命令

History-w #把缓存中的历史命令写入历史命令保存文件. bash_history

The storage capacity of historical commands can be changed in/etc/profile by adding histsize=1000.

Invocation of the history command:

Use the up, down arrows or ctrl+p, CTRL + N

Use!n to perform nth history commands

Use!! Executes the previous command

Use! String to execute the most recent command that starts with the string

Using the Ctrl+r Query history command

Historical command History