alias

设置指令的别名 alias ll=’ls -lah –color’ ls=’ls -a –color’ df=’df -hT’ free=’free -h’ vmstat=’vmstat -S M’ geoip=’geoiplookup’ sudo=’sudo ‘ ss=’ss -4’ PS1=’${debian_chroot:+($debian_chroot)}[033[01;32m]u@h[033[00m]:[033[01;34m]w[033[00m]$ ‘ 永久生效:vi /etc/bash.bashrc，把上面的命令加到后面