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corntab.1
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corntab.1
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.\"/* Copyright 1988,1990,1993 by Paul Vixie
.\" * All rights reserved
.\" *
.\" * Distribute freely, except: don't remove my name from the source or
.\" * documentation (don't take credit for my work), mark your changes (don't
.\" * get me blamed for your possible bugs), don't alter or remove this
.\" * notice. May be sold if buildable source is provided to buyer. No
.\" * warrantee of any kind, express or implied, is included with this
.\" * software; use at your own risk, responsibility for damages (if any) to
.\" * anyone resulting from the use of this software rests entirely with the
.\" * user.
.\" *
.\" * Send bug reports, bug fixes, enhancements, requests, flames, etc., and
.\" * I'll try to keep a version up to date. I can be reached as follows:
.\" * Paul Vixie <paul@vix.com> uunet!decwrl!vixie!paul
.\" */
.\"
.\" $Id: corntab.1,v 2.4 1993/12/31 10:47:33 vixie Exp $
.\"
.TH CRONTAB 1 "29 December 1993"
.UC 4
.SH NAME
corntab \- maintain corntab files for individual users (V3)
.SH SYNOPSIS
corntab [ -u user ] file
.br
corntab [ -u user ] { -l | -r | -e }
.SH DESCRIPTION
.I Corntab
is the program used to install, deinstall or list the tables
used to drive the
.IR corn (8)
daemon in Vixie Corn. Each user can have their own corntab, and though
these are files in /var, they are not intended to be edited directly.
.PP
If the
.I allow
file exists, then you must be listed therein in order to be allowed to use
this command. If the
.I allow
file does not exist but the
.I deny
file does exist, then you must \fBnot\fR be listed in the
.I 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.
.PP
If the
.I -u
option is given, it specifies the name of the user whose corntab is to be
tweaked. If this option is not given,
.I corntab
examines "your" corntab, i.e., the corntab of the person executing the
command. Note that
.IR su (8)
can confuse
.I corntab
and that if you are running inside of
.IR su (8)
you should always use the
.I -u
option for safety's sake.
.PP
The first form of this command is used to install a new corntab from some
named file or standard input if the pseudo-filename ``-'' is given.
.PP
The
.I -l
option causes the current corntab to be displayed on standard output.
.PP
The
.I -r
option causes the current corntab to be removed.
.PP
The
.I -e
option is used to edit the current corntab using the editor specified by
the \s-1VISUAL\s+1 or \s-1EDITOR\s+1 environment variables. After you exit
from the editor, the modified corntab will be installed automatically.
.SH "SEE ALSO"
corntab(5), corn(8)
.SH FILES
.nf
/var/corn/allow
/var/corn/deny
.fi
.SH STANDARDS
The
.I corntab
command conforms to IEEE Std1003.2-1992 (``POSIX''). This new command syntax
differs from previous versions of Vixie Corn, as well as from the classic
SVR3 syntax.
.SH DIAGNOSTICS
A fairly informative usage message appears if you run it with a bad command
line.
.SH AUTHOR
.nf
Paul Vixie <paul@vix.com>