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linux怎么查看pid是否存在
Home Operation and Maintenance Linux Operation and Maintenance How to check if pid exists in linux

How to check if pid exists in linux

Jun 22, 2022 pm 05:33 PM
linux

在linux中,可以利用ps命令来查看pid是否存在,ps命令用于显示当前进程的状态,可以设置参数为“-ef”,查找指定进程的格式,并且显示进程的信息,语法为“ps -ef | grep pid”;若pid存在则会显示瞬间行程的动态信息,若pid不存在则没有显示结果。

How to check if pid exists in linux

本教程操作环境:linux7.3系统、Dell G3电脑。

linux怎么查看pid是否存在

Linux ps (英文全拼:process status)命令用于显示当前进程的状态,类似于 windows 的任务管理器。

语法

ps [options] [--help]
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参数:

ps 的参数非常多, 在此仅列出几个常用的参数并大略介绍含义

-A 列出所有的进程

-w 显示加宽可以显示较多的资讯

-au 显示较详细的资讯

-aux 显示所有包含其他使用者的进程

ps命令(全称:process status)是linux查看当前系统中进程状态的常用命令,比如我们可以通过以下命令查看当前系统所有进程信息:

ps -aux
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执行结果如下:

How to check if pid exists in linux

如果查看指定的进程,如java进程,可以通过管道符和grep命令进行过滤,命令如下:

ps -aux|grep java
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执行结果如下:

How to check if pid exists in linux

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