You should inspect $! and $?, too (copied form system). 
if ($? == -1) {
    print "failed to execute: $!\n";
} elsif ($? & 127) {
    printf "child died with signal %d, %s coredump\n",
           ($? & 127),  ($? & 128) ? 'with' : 'without';
} else {
    printf "child exited with value %d\n", $? >> 8;
}

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In reply to Re: Line Number Confusion by choroba
in thread Line Number Confusion by hmeharward

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