me@mybox:/home/me/sandbox
$ ls -l /tmp/blarney.out
ls: 0653-341 The file /tmp/blarney.out does not exist.
me@mybox:/home/me/sandbox
$ at -f /home/me/sandbox/1.pl now
Job me.1323356887.a will be run at Thu Dec  8 10:08:07 EST 2011.
me@mybox:/home/me/sandbox
$ at -l
me@mybox:/home/me/sandbox
$ ls -l /tmp/blarney.out
-rw-r-----    1 me users             4 Dec 08 10:08 /tmp/blarney.out