~/runnables> su
Password:
tmodel# uname
FreeBSD
tmodel# chown root:wheel test.pl
tmodel# chmod 4711 test.pl
tmodel# exit
exit
~/runnables> more test.pl
test.pl: Permission denied
~/runnables> ./test.pl
At 6:00 AM, Seatac Airport, WA conditions were cloudy skies at  52&deg
+;F,wind was east at 5 mph.  The relative humidity was  97%, and barom
+etric pressure was falling from 30.05 in.
[download]

But using Access Control is safest.