Waiting for a process to die

Chris Rees utisoft at googlemail.com
Sun May 31 18:29:03 UTC 2009

2009/5/31 Kelly Jones <kelly.terry.jones at gmail.com>:
> How do I wait for a specific process to die? I want to do something like:
> waitpid 1234&&(echo "done!" | Mail -s "PROC DONE" kelly.terry.jones at gmail.com)
> I'm sure this is trivial, but I can't find a way to do it.
> I wrote a Perl script that checks every second if /proc/pid exists,
> but that only works if /proc is mounted + I'm now on VMs which can't
> easily mount /proc
> --
> We're just a Bunch Of Regular Guys, a collective group that's trying
> to understand and assimilate technology. We feel that resistance to
> new ideas and technology is unwise and ultimately futile.

[ `ps ax |grep pid | wc -l ` = 1 ] && (echo "done!" | Mail -s "PROC
DONE" kelly.terry.jones at gmail.com)


A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
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