[root@localhost Desktop]# ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.3 192096 7456 ? Ss 03:03 0:03 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
root 2 0.0 0.0 0 0 ? S 03:03 0:00 [kthreadd]

[root@localhost Desktop]# ps aux | grep saslauthd
root 15867 0.0 0.0 112644 952 pts/0 R+ 04:29 0:00 grep --color=auto saslauthd

ps aux 查看进程信息