如何在Linux中通过唯一的进程名获取pid？

Question

I have two java program running on server MyProgram and MyProgramTest .

ps -ef | grep -i java

root       505 17711  0 16:54 pts/4    00:00:00 grep -i MyProgram
root     16450 16448 99 16:46 pts/4    00:07:29 java MyProgram
root     16473 16471 99 16:46 pts/4    00:07:29 java MyProgramTest

I want to search there pid using below commands

ps ax | grep -v grep | grep MyProgram

It should give me PID 16450 but it is giving both

16450 pts/4    Sl     9:19 java MyProgram
16473 pts/4    Sl     9:19 java MyProgramTest

Expected Output :

16450 pts/4    Sl     9:19 java MyProgram

How to get PID by Unique Process Name in linux ?

Answer 1

ps ax | grep -v grep | grep -w "MyProgram"

要么

ps ax | grep -v grep | grep "\MyProgram\b"

Answer 2

You can use,

ps ax | grep -v grep | grep -w  MyProgram

-w for Whole Word Match. However, It will also match things like MyProgram or MyProgram Hello.

Answer 3

为了避免使用grep -v grep之类的技巧，最好使用pgrep ：

pgrep --exact MyProgram

Answer 4

Suffix $, ie; the process name ends with "MyProgram",

$ ps -ef |grep MyProgram$