source /etc/profile 使其生效

PS1='\[\e[37;40m\][\[\e[32;40m\]\u\[\e[37;40m\]@\h \t \[\e[35;40m\]\W\[\e[0m\]]\$ '

时间

nmcli connection show

 nmcli connection show 系统\ eno16777736 查看网卡等信息