history历史记录增加显示时间和用户

history只有行号不方便便

增加现实时间和用户更清楚

[08:50:43 root@c7-1-54 ~]#HISTTIMEFORMAT="%F %T `whoami`  "
[08:51:03 root@c7-1-54 ~]#history
    1  2021-03-03 08:48:12 root  ifconfig
    2  2021-03-03 08:48:12 root  hostname -I
    3  2021-03-03 08:48:12 root  cat /etc/hostname
    4  2021-03-03 08:48:12 root  /etc/hostname < C7
    5  2021-03-03 08:48:12 root  echo C7 < /etc/hostname
    6  2021-03-03 08:48:12 root  cat /etc/hostname
    7  2021-03-03 08:48:12 root  cat /etc/hostname
    8  2021-03-03 08:48:12 root  vi /etc/hostname

将如上配置写入配置文件永久生效

[08:59:15 root@C8-3-55 ~]#vim .bash_profile

修改配置文件

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH

export HISTTIMEFORMAT="%F %T `whoami`  "  ##在末尾添加格式化语句

使文件立即生效

 1057  2021-03-03 08:59:12 root  . .bash_profile
 1058  2021-03-03 08:59:15 root  history