1.\"/* Copyright 1988,1990,1993 by Paul Vixie 2.\" * All rights reserved 3.\" * 4.\" * Distribute freely, except: don't remove my name from the source or 5.\" * documentation (don't take credit for my work), mark your changes (don't 6.\" * get me blamed for your possible bugs), don't alter or remove this 7.\" * notice. May be sold if buildable source is provided to buyer. No 8.\" * warrantee of any kind, express or implied, is included with this 9.\" * software; use at your own risk, responsibility for damages (if any) to 10.\" * anyone resulting from the use of this software rests entirely with the 11.\" * user. 12.\" * 13.\" * Send bug reports, bug fixes, enhancements, requests, flames, etc., and 14.\" * I'll try to keep a version up to date. I can be reached as follows: 15.\" * Paul Vixie <paul@vix.com> uunet!decwrl!vixie!paul 16.\" */ 17.\" 18.\" $FreeBSD$ 19.\" 20.Dd December 29, 1993 21.Dt CRONTAB 1 22.Os 23.Sh NAME 24.Nm crontab 25.Nd maintain crontab files for individual users (V3) 26.Sh SYNOPSIS 27.Nm 28.Op Fl u Ar user 29.Ar file 30.Nm 31.Op Fl u Ar user 32{ 33.Fl l | 34.Fl r | 35.Fl e 36} 37.Sh DESCRIPTION 38.Nm Crontab 39is the program used to install, deinstall or list the tables 40used to drive the 41.Xr cron 8 42daemon in Vixie Cron. Each user can have their own crontab, and though 43these are files in 44.Pa /var , 45they are not intended to be edited directly. 46.Pp 47If the 48.Pa allow 49file exists, then you must be listed therein in order to be allowed to use 50this command. If the 51.Pa allow 52file does not exist but the 53.Pa deny 54file does exist, then you must 55.Em not 56be listed in the 57.Pa deny 58file in order to use this command. If neither of these files exists, then 59depending on site-dependent configuration parameters, only the super user 60will be allowed to use this command, or all users will be able to use this 61command. 62The format of these files is one username per line, 63with no leading or trailing whitespace. 64Lines of other formats will be ignored, 65and so can be used for comments. 66.Pp 67The first form of this command is used to install a new crontab from some 68named file or standard input if the pseudo-filename ``-'' is given. 69.Pp 70The following options are available: 71.Bl -tag -width indent 72.It Fl u 73Specify the name of the user whose crontab is to be 74tweaked. If this option is not given, 75.Nm 76examines "your" crontab, i.e., the crontab of the person executing the 77command. Note that 78.Xr su 1 79can confuse 80.Nm 81and that if you are running inside of 82.Xr su 1 83you should always use the 84.Fl u 85option for safety's sake. 86.It Fl l 87Display the current crontab on standard output. 88.It Fl r 89Remove the current crontab. 90.It Fl e 91Edit the current crontab using the editor specified by 92the 93.Ev VISUAL 94or 95.Ev EDITOR 96environment variables. 97The specified editor 98.Em must 99edit the file in place; 100any editor that unlinks the file and recreates it cannot be used. 101After you exit 102from the editor, the modified crontab will be installed automatically. 103.El 104.Sh SEE ALSO 105.Xr crontab 5 , 106.Xr cron 8 107.Sh FILES 108.Bl -tag -width /var/cron/allow -compact 109.It Pa /var/cron/allow 110.It Pa /var/cron/deny 111.El 112.Sh STANDARDS 113The 114.Nm 115command conforms to 116.St -p1003.2 . 117This new command syntax 118differs from previous versions of Vixie Cron, as well as from the classic 119SVR3 syntax. 120.Sh DIAGNOSTICS 121A fairly informative usage message appears if you run it with a bad command 122line. 123.Sh AUTHORS 124.An Paul Vixie Aq paul@vix.com 125