How to get PID of a process by name in bash script
December 16, 2008
By: Neo
In Category Bash
The following bash shell script looks at the output of “ps” command to identify the PID of a process. This script takes name of the process as command line argument.
[neo@techpulp ~]# cat getpid.sh
#!/bin/bash
ps -e | grep "$1$" | awk '{print $1;}'
[neo@techpulp ~]#
The first part “ps -e” displays the list of all processes in the system. The “grep” command looks for a line ending with the process name supplied as first command line argument to the script. The “awk” command prints the first word in the matching line.
You will see one PID per line if there are multiple processes with the same name. For example, Apache web server runs 10 server processes with name “httpd“.
[neo@techpulp ~]# ./getpid.sh httpd 4201 4205 4206 4207 4208 4209 4210 4211 4212 [neo@techpulp ~]#
good article , thanks for sharing the article!
also you can use:
# pidof
“pidof” program doesnt need to be on all unixes, but really most of all has it (SysV compatibility need it).