linux pidof用法,Linux pidof 命令用法总结

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今天GoFace给大家介绍linux pidof命令的用法，pidof命令大家或许很少见过，不过在适当的场合用处还是不小的。

什么是pidof命令？ #man pidof中的解释：

pidof — find the process ID of a running program.

pidof–用于查找一个运行的程序的PID。

pidof is actually the same program as killall5;

[[email protected] ~]# ls -l /sbin/pidof

lrwxrwxrwx. 1 root root 8 Aug 25 00:40 /sbin/pidof -> killall5 //的确如此。

参数： -s 表示只返回1个 pid

-x 表示同时返回运行给定程序的 shell 的 pid

-o 表示告诉 piod 表示忽略后面给定的 pid ，可以使用多个 -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 是一个 fullpath 则 pidof 不会出错，但如果不是则有可能返回和给定同名的程序。

还是看实例吧。

[[email protected]~]# pidof nginx 1476 1475 1473 1472 1471 1470 1469 1467 1466 [[email protected]~]# 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 [[email protected]~]# ps -ef | grep nginx | awk ’{print $2}’ 1450 1451 1452 1453 1454 1466 1467 1469 1470 1471 1472 1473 1475 1476 2237 [[email protected]~]# pidof -s nginx 1476

[[email protected]~]# pidof sshd 2139 1163 [[email protected]~]# 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:[email protected]/1