# 2.11BSD#431 - /usr/man/cat1/crontab.0

    CRONTAB(1)          UNIX Programmer's 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 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 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 examines "your" crontab, i.e., the crontab of
         the person executing the command.  Note that su(8) can con-
         fuse 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 vari-
         ables.  After you exit from the editor, the modified crontab
         will be installed automatically.

    SEE ALSO
         crontab(5), cron(8)

    FILES
         /var/cron/allow
         /var/cron/deny

    STANDARDS
         The crontab command conforms to IEEE Std1003.2-1992

    Printed 11/26/99        29 December 1993                        1

    CRONTAB(1)          UNIX Programmer's Manual           CRONTAB(1)

         (``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>

    Printed 11/26/99        29 December 1993                        2

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