Question on at and atq commands

[John Geiger]

Hi Brian
 
cron and at were both installed with RH9 server which we use here for training purposes. Both have 
been around for a long, long time.
 
As for the differences, cron is for repetitive scheduling while at is for one 'one time' execution. 
In other words, if you want something to run more than once, use cron. I would agree that at is 
rarely used but it is part of Unix and Linux distros.
 
Hope this helps.
 
John Geiger

	-----Original Message----- 
	From: Brian Kelsay [mailto:BLKELSAY at kcc.usda.gov] 
	Sent: Thu 2/12/2004 10:48 AM 
	To: kclug at kclug.org 
	Cc: 
	Subject: Re: Question on at and atq commands
	
	

	This will probably sound stupid, but I thought that at was only used on floppy linuxes 
because it is small.  I've only really set up scheduled jobs w/ cron.  Are at AND cron normally 
installed on desktop and server default distro installs?  If they are both there, then I haven't 
been paying attention.  What is the difference between the two, as far as functionality?
	
	
	
	Brian Kelsay
	
	>>> Jason Clinton <> 02/12/04 09:57AM >>>
	cat /var/spool/at/atspool
	
	atd seems like a really inadequate piece of software, though. I wish
	there were a version of cron that did it all.