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][-i]

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, only the super user will be allowed 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
       command.	 Note that su(8) can confuse crontab and that if you are run-
       ning  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.

       The -i option modifies the -r option to prompt the user	for  a	'y/Y'
       response before actually removing the crontab.

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 



4th Berkeley Distribution      29 December 1993			   CRONTAB(1)

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