root 2234 2141 0 20:24 pts/1 00:00:00 grep nginx
[root@GoGo ~]# ps -ef | grep nginx | awk '{print $2}'
1450
1451
1452
1453
1454
1466
1467
1469
1470
1471
1472
1473
1475
1476
2237
[root@GoGo ~]# pidof -s nginx
1476
[root@GoGo ~]# pidof sshd
2139 1163
[root@GoGo ~]# ps -ef | grep sshd
root 1163 1 0 20:16 ? 00:00:00 /usr/sbin/sshd
root 2139 1163 0 20:20 ? 00:00:00 sshd: root@pts/1
