On 14Sep2008 17:19, Antonio Olivares <[EMAIL PROTECTED]> wrote:
| Dear fellow Fedora users,
|
| I have a little problem when starting KDE. I have multiple versions of
gkrellm running at the same time, and I configured it to "not run multiple
instances". When I run top, I see several gkrellm(s), how do I prevent this?
|
| I have run this for a while and it is getting tiring
|
| $ killall -9 gkrellm
Gah! NEVER reach for "-9" first. It is a signal of last resort.
| $ gkrellm &
The trivial way is this:
pidfile=$HOME/.grkrellm.pid
if [ -s "$pidfile" ] && pid=$(<"$pidfile") && kill -0 "$pid" 2>/dev/null
then
echo GKrellM already running, pid=$pid, not starting a new one.
else
gkrellm & # start gkrellm
echo $! >"$pidfile" # save the pid
fi
It is slightly racy, but not on a scale you are likely to encounter in
typical use.
Frankly, "killall" is a command I try NEVER to go near. It is like
trying to break an egg by letting off a grenade.
Cheers,
--
Cameron Simpson <[EMAIL PROTECTED]> DoD#743
http://www.cskk.ezoshosting.com/cs/
Careful and correct use of language is a powerful aid to straight thinking,
for putting into words precisely what we mean necessitates getting our own
minds quite clear on what we mean. - W.I.B. Beveridge
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