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mtello17

Member

Registered: 2014-03-22

Posts: 34

[SOLVED] How to get pid when executing

I am wondering if there is a way to get the pid of an executing process, say conky.

I am using conky as an alert box, displaying a certain text, then I kill conky using

killall

. I would instead rather use

kill

, but without knowing the pid of the alert box, I cannot do much. Perhaps you guy would have any ideas? Thanks!

Last edited by mtello17 (2014-04-19 22:26:05)

dif

Member

From: Stalowa Wola, Poland

Registered: 2009-12-22

Posts: 137

Re: [SOLVED] How to get pid when executing

Try this:

ps aux|grep -v awk|awk '/conky/ {print $2}'

If you want to use a variable, say PROCESS="conky", try

ps aux|grep -v awk|awk /$PROCESS/ '{print $2}'

or

ps aux|grep -v awk|awk "/$PROCESS/" '{print $2}'

dif

Member

From: Stalowa Wola, Poland

Registered: 2009-12-22

Posts: 137

Re: [SOLVED] How to get pid when executing

Check commands "pidof", "pgrep", and "pkill", too.

karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: [SOLVED] How to get pid when executing

See http://stackoverflow.com/questions/1908 … nd-process

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,426

Website

Re: [SOLVED] How to get pid when executing

ps aux|grep -v awk|awk /$PROCESS/ '{print $2}'

or

ps aux|grep -v awk|awk "/$PROCESS/" '{print $2}'

You don't need the grep with awk:

ps aux | awk '/tmux/ && !/awk/ {print $2}'

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HiImTye

Member

From: Halifax, NS, Canada

Registered: 2012-05-09

Posts: 1,072

Re: [SOLVED] How to get pid when executing

a few options:

pkill conky
pidof conky
ps --format="pid" -C conky
# with short command name:
ps --format="pid,comm" -C conky
# or full command name (includes flags, etc):
ps --format="pid,command" -C conky

Last edited by HiImTye (2014-04-19 09:09:34)

Mr.Elendig

#archlinux@freenode channel op

From: The intertubes

Registered: 2004-11-07

Posts: 4,097

Re: [SOLVED] How to get pid when executing

doesn't conky have a timeout argument or similar?

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bergersau

Member

Registered: 2012-01-19

Posts: 52

Re: [SOLVED] How to get pid when executing

$ ps aux|grep conky

Is how I'd get the pid for conky.

Last edited by bergersau (2014-04-19 11:41:34)

rebootl

Member

Registered: 2012-01-10

Posts: 431

Website

Re: [SOLVED] How to get pid when executing

karol's link is answering this question. It's the only one that makes sure to get the right PID in case you got multiple conky's.

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bstaletic

Member

Registered: 2014-02-02

Posts: 658

Re: [SOLVED] How to get pid when executing

I used top for that task. It lists all active processes along with their PID, user, RAM usage and CPU usage.

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Spider.007

Member

Registered: 2004-06-20

Posts: 1,176

Re: [SOLVED] How to get pid when executing

How is manually parsing `ps` output better than `killall /usr/bin/conky` ?

mtello17

Member

Registered: 2014-03-22

Posts: 34

Re: [SOLVED] How to get pid when executing

I'm using fluxbox to create keymodes (like vim). Bringing up an alert box through conky tells me that I am in a certain keymode, and when I leave my keymode I kill my alert box (conky).

Knowing the pid of an instance of conky that I just ran is paramount, otherwise any other conky instance could also be killed.

Last edited by mtello17 (2014-04-19 21:13:31)

mtello17

Member

Registered: 2014-03-22

Posts: 34

Re: [SOLVED] How to get pid when executing

See I don't want to get the pid of a process running in the background, I instead want to get the pid of a conky instance when I run it.

Last edited by mtello17 (2014-04-19 21:13:09)

mtello17

Member

Registered: 2014-03-22

Posts: 34

Re: [SOLVED] How to get pid when executing

Karol's answer, which would be perfect for most people, doesn't work with multiple instances of bash, and what I need is something that would work on multiple instances of bash
Here is what I'm doing:

# current window commands
Mod4 w Mod4 w                   :MacroCmd { Exec conky -t "Window Mode" -a top_right -y 0 -b & KEYMODE=$! } { KeyMode WindowMode None }
WindowMode: None Escape     :MacroCmd  {Exec kill $KEYMODE} { KeyMode default }

Last edited by mtello17 (2014-04-19 21:59:31)

mtello17

Member

Registered: 2014-03-22

Posts: 34

Re: [SOLVED] How to get pid when executing

Solved it with the help of karol's answer. I just created this simple script:

#!/bin/env bash

_1=$1
_2=$2
if "$_2" == ""; then
    cr=kill_default
else
    cr=$_2
fi

echo "kill $_1" >> ~/bin/$cr
chmod 777 ~/bin/$cr

Last edited by mtello17 (2014-04-20 02:40:12)

HiImTye

Member

From: Halifax, NS, Canada

Registered: 2012-05-09

Posts: 1,072

Re: [SOLVED] How to get pid when executing

if you want to get it from another script, have your first script echo your pid to /tmp/ such as

conky
echo $! > /tmp/myPID

then just get it in your other script

Raynman

Member

Registered: 2011-10-22

Posts: 1,539

Re: [SOLVED] How to get pid when executing

$XDG_RUNTIME_DIR would be more appropriate for PID files than /tmp.

mtello17

Member

Registered: 2014-03-22

Posts: 34

Re: [SOLVED] How to get pid when executing

Cool, that also works, and is probably less work, thanks