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grep filtering problem

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# 1  
Old 06-30-2010
grep filtering problem
I'm working on writing a shell script that logs out whenever I have a firefox process running during certain times of the day (1 am - 8 am). I'll put it in crontab when it runs properly unless someone knows of a different and better way to do this. Here it is so far.

Code:
if ps ax | grep firefox-3.6.3
then 
echo hi
/usr/bin/gnome-session-save --kill --silent
exit 0 
fi

Its not working yet cause grep isn't filtering the way I need it to. This is what I get when firefox is running.
Code:
ps ax | grep firefox-3.6.3
 1859 ?        S      0:00 /bin/sh /usr/lib/firefox-3.6.3/firefox
 1864 ?        S      0:00 /bin/sh /usr/lib/firefox-3.6.3/run-mozilla.sh /usr/lib/firefox-3.6.3/firefox-bin
 1868 ?        Sl     1:45 /usr/lib/firefox-3.6.3/firefox-bin
 3374 pts/0    S+     0:00 grep --colour=auto firefox-3.6.3

This is what I get when firefox is not running.
Code:
ps ax | grep firefox-3.6.3
 3374 pts/0    S+     0:00 grep --colour=auto firefox-3.6.3

I need it to ignore the grep filtering process.
# 2  
Old 06-30-2010
Code:
if ps ax | grep '[f]irefox-3.6.3'

# 3  
Old 06-30-2010
Quote:
Originally Posted by vgersh99
Code:
if ps ax | grep '[f]irefox-3.6.3'

Works perfectly. Could you please explain why that works?

---------- Post updated at 06:01 PM ---------- Previous update was at 03:52 PM ----------

Also found that this works.
Code:
 ps -ef | grep firefox\$

https://www.unix.com/unix-dummies-que...p-process.html
# 4  
Old 07-08-2010
Could someone please explain why putting the f in square brackets got grep to filter the way I wanted it to?
# 5  
Old 07-08-2010
u can try this also -
ps ax|grep firefox-3.6.3|grep -v grep
Last edited by bmm04746; 07-08-2010 at 01:49 AM..
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