Linux pidof命令使用总结

　　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一、什么是pidof命令？  代码如下:#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;[root@GoGo ~]# ls -l /sbin/pidoflrwxrwxrwx. 1 root root 8 Aug 25 00:40 /sbin/pidof -> killall5 //的确如此。二、pidof命令的参数-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 itis possible that it returns pids of running programs that happen to have the same name as the program you're after but areactually 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。 三、pidof命令使用实例代码如下:[root@GoGo ~]# pidof nginx1476 1475 1473 1472 1471 1470 1469 1467 1466[root@GoGo ~]# ps -ef | grep nginxnginx     1450  1449  0 20:16 ?        00:00:00 php-fpm: pool wwwnginx     1451  1449  0 20:16 ?        00:00:00 php-fpm: pool wwwnginx     1452  1449  0 20:16 ?        00:00:00 php-fpm: pool wwwnginx     1453  1449  0 20:16 ?        00:00:00 php-fpm: pool wwwnginx     1454  1449  0 20:16 ?        00:00:00 php-fpm: pool wwwroot      1466     1  0 20:16 ?        00:00:00 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.confnginx     1467  1466  0 20:16 ?        00:00:00 nginx: worker processnginx     1469  1466  0 20:16 ?        00:00:00 nginx: worker processnginx     1470  1466  0 20:16 ?        00:00:00 nginx: worker processnginx     1471  1466  0 20:16 ?        00:00:00 nginx: worker processnginx     1472  1466  0 20:16 ?        00:00:00 nginx: worker processnginx     1473  1466  0 20:16 ?        00:00:00 nginx: worker processnginx     1475  1466  0 20:16 ?        00:00:00 nginx: worker processnginx     1476  1466  0 20:16 ?        00:00:00 nginx: worker processroot      2234  2141  0 20:24 pts/1    00:00:00 grep nginx[root@GoGo ~]# ps -ef | grep nginx | awk '{print $2}'145014511452145314541466146714691470147114721473147514762237[root@GoGo ~]# pidof -s nginx1476[root@GoGo ~]# pidof sshd2139 1163[root@GoGo ~]# ps -ef | grep sshdroot      1163     1  0 20:16 ?        00:00:00 /usr/sbin/sshdroot      2139  1163  0 20:20 ?        00:00:00 sshd: root@pts/1