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This works for me on both Linux and Windows (Strawberry Perl). First, we set a timeout in the $time variable, which in this example is two seconds. Then, inside of an eval, we simulate a long (relatively) running command, which is wrapped by an ALRM signal handler. If the command runs longer than the timeout (in the example, I simulate a long running command with sleep), we catch the error message caught from die, and act on it. Otherwise, we display the output of the command

Reduce the sleep to a lower number than $time (ie. zero) to get the return properly:

use warnings; use strict; my $time = 2; my $cmd = 'dir'; my $check = 1; my $output; print "check is $check\n"; eval { local $SIG{ALRM} = sub { die 'timed out'; }; alarm $time; $output = `$cmd`; sleep 4; $check++; alarm 0; }; if ($@ && $@ =~ /timed out/){ print "damn command timed out!\n"; } else { print "$output\n"; } print "check is now $check\n";

In reply to Re: Run and kill external programm after x seconds by stevieb
in thread Run and kill external programm after x seconds by demichi

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