History命令添加时间戳永久生效

临时生效：

[root@localhost ~]# HISTTIMEFORMAT="%Y-%m-%d %H:%M:%S"

[root@localhost ~]# export HISTTIMEFORMAT

[root@localhost ~]# history

永久生效

[root@localhost ~]# cat ~/.bashrc
# .bashrc

# User specific aliases and functions

alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'

# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
export HISTTIMEFORMAT="%Y-%m-%d %H:%M:%S"
[root@localhost ~]#

[root@localhost ~]# source ~/.bashrc

[root@localhost ~]# history