rouble rouble - 4 months ago 10
Bash Question

bash: silently kill background function process

shell gurus,

I have a bash shell script, in which I launch a background function, say foo(), to display a progress bar for a boring and long command:

foo()
{
while [ 1 ]
do
#massively cool progress bar display code
sleep 1
done
}

foo &
foo_pid=$!

boring_and_long_command
kill $foo_pid >/dev/null 2>&1
sleep 10


now, when foo dies, I see the following text:

/home/user/script: line XXX: 30290 Killed foo


This totally destroys the awesomeness of my, otherwise massively cool, progress bar display. How do I get rid of this message?

tia,
prmatta

Answer
kill $foo_pid
wait $foo_pid 2>/dev/null

BTW, I don't know about your massively cool progress bar, but have you seen Pipe Viewer (pv)? http://www.ivarch.com/programs/pv.shtml

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