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Re: Keep n instances running

by tweetiepooh (Friar)
on Jun 20, 2012 at 14:48 UTC ( #977372=note: print w/replies, xml ) Need Help??

in reply to Keep n instances running

When ever I need to keep a job running I use a sub shell type structure

#!(bash|ksh|sh) <set up environment> (while true do <perl script> # brief delay to ensure everything is shutdown sleep 60 done) &

The subshell itself is backgrounded rather than just the Perl script.

I'm sure this can be adapted to starting up n copies of <perl script> maybe a little loop that will fire up multiple subshells. Note I'm not a BASH expert

#!(bash|ksh|sh) <set up environment> for I in {1..n}; do (while true do <perl script> $I # brief delay to ensure everything is shutdown sleep 60 done) &; done

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[pryrt]: Those others were definitely offensive or unequivocably rude, I agree.
[choroba]: (well, it comes from the 14th century, so labelling it as "modern" doesn't seem appropriate)
[Your Mother]: "They" is becoming accepted but it irritates me sometimes. I tend to just pick she or he randomly or try to use "one."
LanX thinks it is appropriate here :)
[Your Mother]: They would think so.
[jdporter]: ok, I need a recipe for piping lines "through" an external program which is itself a filter
[jdporter]: without using a tmp file
[1nickt]: tobyink perl -MTypes::Standard= is_Int -Mstrict -wE 'say 1 if is_Int 1.0'
[jdporter]: so that I can use the existing expand unix util. Otherwise, I'll probably use Text::Tabs.
[1nickt]: pryrt I guess I don;t really care if user 42 logs on as 42.0 ... more of an academic question at this point.

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