perl -e 'print "$^O, $]\n"; sleep 1; die' 2>/dev/null; echo $? の結果が % perl -e 'print "$^O, $]\n"; sleep 1; die' 2>/dev/null; echo $? darwin, 5.018001 60 % /usr/bin/perl -e 'print "$^O, $]\n"; sleep 1; die' 2>/dev/null; echo $? darwin, …