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CRONTAB(1)		  BSD General Commands Manual		    CRONTAB(1)

     crontab --	maintain crontab files for individual users (V3)

     crontab [-u user] file
     crontab [-u user] { -l | -r | -e }

     Crontab is	the program used to install, deinstall or list the tables used
     to	drive the cron(8) daemon in Vixie Cron.	 Each user can have their own
     crontab, and though these are files in /var, they are not intended	to be
     edited directly.

     If	the allow file exists, then you	must be	listed therein in order	to be
     allowed to	use this command.  If the allow	file does not exist but	the
     deny file does exist, then	you must not be	listed in the deny file	in or-
     der to use	this command.  If neither of these files exists, then depend-
     ing on site-dependent configuration parameters, only the super user will
     be	allowed	to use this command, or	all users will be able to use this

     The first form of this command is used to install a new crontab from some
     named file	or standard input if the pseudo-filename ``-'' is given.

     The following options are available:

     -u	     Specify the name of the user whose	crontab	is to be tweaked.  If
	     this option is not	given, crontab examines	"your" crontab,	i.e.,
	     the crontab of the	person executing the command.  Note that su(1)
	     can confuse crontab and that if you are running inside of su(1)
	     you should	always use the -u option for safety's sake.

     -l	     Display the current crontab on standard output.

     -r	     Remove the	current	crontab.

     -e	     Edit the current crontab using the	editor specified by the	VISUAL
	     or	EDITOR environment variables.  The specified editor must edit
	     the file in place;	any editor that	unlinks	the file and recreates
	     it	cannot be used.	 After you exit	from the editor, the modified
	     crontab will be installed automatically.

     crontab(5), cron(8)


     The crontab command conforms to IEEE Std 1003.2 ("POSIX.2").  This	new
     command syntax differs from previous versions of Vixie Cron, as well as
     from the classic SVR3 syntax.

     A fairly informative usage	message	appears	if you run it with a bad com-
     mand line.

     Paul Vixie	<>

BSD			       December	29, 1993			   BSD


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