Plan 9 from Bell Labs’s /usr/web/sources/contrib/gabidiaz/root/sys/src/cmd/perl/t/op/sleep.t
#!./perl # $RCSfile: sleep.t,v $$Revision: 4.1 $$Date: 92/08/07 18:28:23 $ print "1..1\n"; $x = sleep 3; if ($x >= 2 && $x <= 10) {print "ok 1\n";} else {print "not ok 1 $x\n";}