ps -eo 用户自定义格式显示

[root@ma ~]# ps -eo pid,ucomm|head -3
PID COMMAND
1 init
2 kthreadd
[root@ma ~]# ps axu|head -3
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.2 2900 1388 ? Ss 02:18 0:01 /sbin/init
root 2 0.0 0.0 0 0 ? S 02:18 0:00 [kthreadd]