[root@testapp ~]# ps -ef | grep nginx
root 25265 25216 0 09:22 pts/0 00:00:00 grep --color=auto nginx
root 32753 23683 0 Apr01 ? 00:00:00 nginx: master process ./nginx
nobody 32754 32753 0 Apr01 ? 00:00:00 nginx: worker process
[root@testapp ~]# ps -ef | grep nginx | grep -v grep
root 32753 23683 0 Apr01 ? 00:00:00 nginx: master process ./nginx
nobody 32754 32753 0 Apr01 ? 00:00:00 nginx: worker process
[root@testapp ~]# ps -ef | grep nginx | grep -v grep | awk '{print $2}'
32753
32754
[root@testapp ~]# ps -ef | grep nginx | grep -v grep | awk '{print $2}' | xargs kill -9