Re: Killing processes

Backticks call a shell command and return its output. system just runs a command, letting its output go to the standard output. But you combined them into

system `kill $pid`;
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So, backticks call kill. Kill doesn't return anything on the standard output, so system gets called with an empty string as the argument. Remove the backquotes and just call system:

my $status = system 'kill', $pid;
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Update: Or, even better, use kill:

kill $pid;
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Comment on Re: Killing processes Select or Download Code

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Re^2: Killing processes by deyaneria (Acolyte) on Mar 20, 2015 at 16:19 UTC
so it's basically like i'm telling it to do it twice:) Thanks you guys pick up on stuff my teacher misses, he couldn't find anything wrong with it.	[reply]
Re^3: Killing processes by karlgoethebier (Abbot) on Mar 20, 2015 at 18:49 UTC
My 2¢ - a very basic kata, featuring the usage of kill: `karls-mac-mini:monks karl$ perl -e 'print $$;sleep;' & [1] 434 karls-mac-mini:monks karl$ jobs [1]+ Running perl -e 'print $$;sleep;' & karls-mac-mini:monks karl$ ps aux \| grep [p]erl karl 434 0,0 0,0 2440564 2148 s000 S 7:20pm 0: +00.01 perl -e print $$;sleep; karls-mac-mini:monks karl$ perl -e 'print kill q(TERM), 434;' 1[1]+ Terminated: 15 perl -e 'print $$;sleep;' karls-mac-mini:monks karl$ jobs karls-mac-mini:monks karl$ ps aux \| grep [p]erl karls-mac-mini:monks karl$` [download] Regards, Karl «The Crux of the Biscuit is the Apostrophe»	[reply] [d/l]