linux 之 history 使用技巧

> vim /etc/bashrcexport HISTTIMEFORMAT="%Y-%m-%d:"> source /etc/bashrc> history1006  2021-05-19:vim /etc/bashrc 1007  2021-05-19:history 1008  2021-05-19:source /etc/bashrc 1009  2021-05-19:history 

> vim /etc/bashrcexport HISTTIMEFORMAT="%F %T:"> source /etc/bashrc> history1009  2021-05-19 22:35:24:history 1010  2021-05-19 22:36:40:vim /etc/bashrc 1011  2021-05-19 22:37:02:source /etc/bashrc 1012  2021-05-19 22:37:07:history 

> vim /etc/bashrcexport HISTTIMEFORMAT="%Y-%m-%d %H:%M:%S `whoami`"> source /etc/bashrc> history1012  2021-05-19 22:37:07 root:history 1013  2021-05-19 22:37:41 root:vim /etc/bashrc 1014  2021-05-19 22:38:06 root:source /etc/bashrc 1015  2021-05-19 22:38:08 root:history 

> vim /etc/bashrcexport HISTTIMEFORMAT="%Y-%m-%d %H:%M:%S `who am i | awk '{print $1,$5}'`"> source /etc/bashrc> history1021  2021-05-19 22:42:59 root (171.43.176.3):history 1022  2021-05-19 22:43:03 root (171.43.176.3):source /etc/bashrc 1023  2021-05-19 22:43:06 root (171.43.176.3):vim /etc/bashrc 1024  2021-05-19 22:43:19 root (171.43.176.3):source /etc/bashrc 1025  2021-05-19 22:43:21 root (171.43.176.3):history 

> vim /etc/bashrc# 保存1000条记录export HISTSIZE=1000> source /etc/bashrc

> vim /etc/bashrcexport HISTFILE=/var/log/.cmd_log> source /etc/bashrc

> vim /etc/bashrcexport HISTCONTROL=ignoredups  > source /etc/bashrc

> shopt -s histappend

> PROMPT_COMMAND='history -a'

> history

> echo " " > .bash_history