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: src/usr.sbin/cron/crontab/crontab.1,v 1.7.2.4 2002/06/21 16:40:09 charnier Exp $ 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 38The 39.Nm 40utility is the program used to install, deinstall or list the tables 41used to drive the 42.Xr cron 8 43daemon in Vixie Cron. Each user can have their own crontab, and though 44these are files in 45.Pa /var , 46they are not intended to be edited directly. 47.Pp 48If the 49.Pa allow 50file exists, then you must be listed therein in order to be allowed to use 51this command. If the 52.Pa allow 53file does not exist but the 54.Pa deny 55file does exist, then you must 56.Em not 57be listed in the 58.Pa deny 59file in order to use this command. If neither of these files exists, then 60depending on site-dependent configuration parameters, only the super user 61will be allowed to use this command, or all users will be able to use this 62command. 63The format of these files is one username per line, 64with no leading or trailing whitespace. 65Lines of other formats will be ignored, 66and so can be used for comments. 67.Pp 68The first form of this command is used to install a new crontab from some 69named file or standard input if the pseudo-filename ``-'' is given. 70.Pp 71The following options are available: 72.Bl -tag -width indent 73.It Fl u 74Specify the name of the user whose crontab is to be 75tweaked. If this option is not given, 76.Nm 77examines "your" crontab, i.e., the crontab of the person executing the 78command. Note that 79.Xr su 1 80can confuse 81.Nm 82and that if you are running inside of 83.Xr su 1 84you should always use the 85.Fl u 86option for safety's sake. 87.It Fl l 88Display the current crontab on standard output. 89.It Fl r 90Remove the current crontab. 91.It Fl e 92Edit the current crontab using the editor specified by 93the 94.Ev VISUAL 95or 96.Ev EDITOR 97environment variables. 98The specified editor 99.Em must 100edit the file in place; 101any editor that unlinks the file and recreates it cannot be used. 102After you exit 103from the editor, the modified crontab will be installed automatically. 104.El 105.Sh FILES 106.Bl -tag -width /var/cron/allow -compact 107.It Pa /var/cron/allow 108.It Pa /var/cron/deny 109.El 110.Sh DIAGNOSTICS 111A fairly informative usage message appears if you run it with a bad command 112line. 113.Sh SEE ALSO 114.Xr crontab 5 , 115.Xr cron 8 116.Sh STANDARDS 117The 118.Nm 119command conforms to 120.St -p1003.2 . 121This new command syntax 122differs from previous versions of Vixie Cron, as well as from the classic 123SVR3 syntax. 124.Sh AUTHORS 125.An Paul Vixie Aq Mt paul@vix.com 126