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CRONTAB(1)							    CRONTAB(1)

NAME
       crontab - maintain crontab files for individual users (ISC Cron V4.1)

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 ISC 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 cron.allow file exists, then you must be listed therein in order
       to  be  allowed	to  use this command.  If the cron.allow file does not
       exist but the cron.deny file does exist, then you must not be listed in
       the  cron.deny  file in order to use this command.  If neither of these
       files exists, no user is permitted. This is a SUSE specific limitation,
       upstream versions allow the super user in this case.

       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 <vixie@isc.org>

4th Berkeley Distribution      29 December 1993			    CRONTAB(1)

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