CRONTAB(1)                                             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  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 automatically.

      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  previ-
             ous  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>

                               29 December 1993                       1

      --
      crontab.org is maintained by Ilya Sukhar