CODEWITHSUNDEEP
bash
Dynamiite
Dynamiite

Reputation: 1499

Alternative bash script to check if a process is running

What would be the easiest and the most reliable way to check if a process is running in a script using bash?

Here´s what i have:

x=`ps aux | grep firefox | grep -v grep | awk '{print $2 }'`

if [ $x > 0 ];
then kill -9 $x
echo "Firefox terminated"
else echo "bla bla bla"
fi

Upvotes: 3

Views: 1688

Answers (4)

onur
onur

Reputation: 6365

Pidof:

x=`pidof firefox`
if [[ $x > 0 ]];
then
kill -9 $x
echo "Firefox terminated"
else
echo "bla bla bla"
fi

Upvotes: 0

Gilles Quénot
Gilles Quénot

Reputation: 185073

What about :

pkill &>/dev/null firefox && echo "ff terminated" || echo "no ff PIDs"

No need -9 signal here ;)

Upvotes: 1

tlo
tlo

Reputation: 1631

if x=$(pgrep firefox); then
    kill -9 $x
    # ...
fi

If you just want to kill the process:

pkill -9 firefox

Upvotes: 3

julienc
julienc

Reputation: 20315

Maybe you can use pgrep to do this ?

From the man page:

pgrep looks through the currently running processes and lists the process IDs which matches the selection criteria to stdout.

Example:

$> pgrep firefox | xargs -r kill -9

In this example, the pid of the process is used by the kill command. The -r option of xargs allows to execute the kill command only if there is a pid.

Upvotes: 2

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