How to get pid given the process name
UnixKshPidPsUnix Problem Overview
Hi I have searched various forums and here as well, I could find some answers for Linux and Mac but not able to find solution for Unix and specially Korn Shell.
How to get process name (command name) from process id (pid)
Below reference I found from SO This one And this one also
I tried below command
ps -eaf | awk '{ print substr($0, index($0, $9)) }'
Above command is failing at a point where TIME is given rather than Month and Date (because in this case there will be only 8 columns in string)
Any suggestion would help.
Unix Solutions
Solution 1 - Unix
I think it is easier to use pgrep
$ pgrep bluetoothd
441
Otherwise, you can use awk
:
ps -ef | awk '$8=="name_of_process" {print $2}'
For example, if ps -ef
has a line like:
root 441 1 0 10:02 ? 00:00:00 /usr/sbin/bluetoothd
Then ps -ef | awk '$8=="/usr/sbin/bluetoothd" {print $2}'
returns 441
.
> In ksh pgrep is not found. and the other solution is failing in case > below is output from ps command jaggsmca325 7550 4752 0 Sep 11 pts/44 > 0:00 sqlplus dummy_user/dummy_password@dummy_schema
Let's check the last column ($NF
), no matter its number:
$ ps -ef | awk '$NF=="/usr/sbin/bluetoothd" {print $2}'
441
If you want to match not exact strings, you can use ~
instead:
$ ps -ef | awk '$NF~"bluetooth" {print $2}'
441
1906
Solution 2 - Unix
You can use pidof
to get all IDs of running processes with the name p_name
:
pidof
p_name | tr ' ' '\n'
(for a vertical listing)
pkill
p_name
- kill all processes whith the name p_name
Make sure that you have the permission to kill them all :)
Solution 3 - Unix
If your ps | awk
solution is failing because the output of ps
is not what you want, then make it so:
ps -eaf -o pid,cmd | awk '/regex-to-match-command-name/{ print $1 }'
Solution 4 - Unix
ps -C <the-name> -o etime=
My ps is from procps-ng .