Linux pidof命令使用總結

 今天GoFace給大家介紹linux pidof命令的用法，pidof命令大家或許很少見過，不過在適當的場合用處還是不小的

一、什麼是pidof命令？    代碼如下:#man pidof中的解釋： pidof — find the process ID of a running program. pidof–用於查找一個運行的程序的PID。 pidof is actually the same program as killall5; [root@GoGo ~]# ls -l /sbin/pidof lrwxrwxrwx. 1 root root 8 Aug 25 00:40 /sbin/pidof -> killall5 //的確如此。 二、pidof命令的參數 -s 表示只返回1個 pid -x 表示同時返回運行給定程序的 shell 的 pid -o 表示告訴 piod 表示忽略後面給定的 pid ，可以使用多個 -o 。 pidof is simply a (symbolic) link to the killall5 program, which should also be located in /sbin. When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is possible that it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs. 如果 是一個 fullpath 則 pidof 不會出錯，但如果不是則有可能返回和給定同名的程序。   三、pidof命令使用實例 代碼如下:[root@GoGo ~]# pidof nginx 1476 1475 1473 1472 1471 1470 1469 1467 1466 [root@GoGo ~]# ps -ef | grep nginx nginx     1450  1449  0 20:16 ?        00:00:00 php-fpm: pool www nginx     1451  1449  0 20:16 ?        00:00:00 php-fpm: pool www nginx     1452  1449  0 20:16 ?        00:00:00 php-fpm: pool www nginx     1453  1449  0 20:16 ?        00:00:00 php-fpm: pool www nginx     1454  1449  0 20:16 ?        00:00:00 php-fpm: pool www root      1466     1  0 20:16 ?        00:00:00 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf nginx     1467  1466  0 20:16 ?        00:00:00 nginx: worker process nginx     1469  1466  0 20:16 ?        00:00:00 nginx: worker process nginx     1470  1466  0 20:16 ?        00:00:00 nginx: worker process nginx     1471  1466  0 20:16 ?        00:00:00 nginx: worker process nginx     1472  1466  0 20:16 ?        00:00:00 nginx: worker process nginx     1473  1466  0 20:16 ?        00:00:00 nginx: worker process nginx     1475  1466  0 20:16 ?        00:00:00 nginx: worker process nginx     1476  1466  0 20:16 ?        00:00:00 nginx: worker process 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