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CRONTAB(1)		    General Commands Manual		    CRONTAB(1)

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

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

DESCRIPTION
       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 in-
       tended 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  order  to use this command.	If neither of these files exists, then
       depending 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	command.

       If the -u option	is given, it specifies the  name  of  the  user	 whose
       crontab	is  to be tweaked.  If this option is not given, crontab exam-
       ines "your" crontab, i.e., the crontab of the person executing the com-
       mand.   Note that su(8) can confuse crontab and that if you are running
       inside of su(8) you should always use the -u option for safety's	sake.

       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 -l option causes the	current	crontab	to be  displayed  on  standard
       output.

       The -r option causes the	current	crontab	to be removed.

       The  -e	option	is  used  to edit the current crontab using the	editor
       specified by the	VISUAL or EDITOR  environment  variables.   After  you
       exit  from the editor, the modified crontab will	be installed automati-
       cally.

SEE ALSO
       crontab(5), cron(8)

FILES
       /etc/cron.allow
       /etc/cron.deny

STANDARDS
       The crontab command conforms to IEEE Std1003.2-1992 (``POSIX'').	  This
       new  command  syntax  differs  from previous versions of	Vixie Cron, as
       well as from the	classic	SVR3 syntax.

DIAGNOSTICS
       A fairly	informative usage message appears if you run  it  with	a  bad
       command line.

AUTHOR
       Paul Vixie <paul@vix.com>

4th Berkeley Distribution      29 December 1993			    CRONTAB(1)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | FILES | STANDARDS | DIAGNOSTICS | AUTHOR

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