Linux查看进程启动时间与运行时间

方法一

• grep进程名

[root@iZ25p102vo3Z ~]# ps -eo pid,lstart,etime,cmd | grep nginx
16968 Fri Mar  4 16:04:27 2016 41-21:14:04 nginx: master process /usr/sbin/nginx
17826 Fri Mar  4 22:53:51 2016 41-14:24:40 nginx: worker process
18312 Fri Apr 15 13:18:31 2016       00:00 grep --color=auto nginx

方法二

• 指定进程号

ps -p PID -o lstart,etime 

参考：
https://jaminzhang.github.io/linux/using-ps-to-view-process-started-and-elapsed-time-in-linux/
https://blog.51cto.com/leomars/1888213