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.\" $DragonFly: src/usr.sbin/cron/crontab/crontab.1,v 1.2 2003/06/17 04:29:53 dillon Exp $ 20.\" 21.Dd December 29, 1993 22.Dt CRONTAB 1 23.Os 24.Sh NAME 25.Nm crontab 26.Nd maintain crontab files for individual users (V3) 27.Sh SYNOPSIS 28.Nm 29.Op Fl u Ar user 30.Ar file 31.Nm 32.Op Fl u Ar user 33{ 34.Fl l | 35.Fl r | 36.Fl e 37} 38.Sh DESCRIPTION 39The 40.Nm 41utility is the program used to install, deinstall or list the tables 42used to drive the 43.Xr cron 8 44daemon in Vixie Cron. Each user can have their own crontab, and though 45these are files in 46.Pa /var , 47they are not intended to be edited directly. 48.Pp 49If the 50.Pa allow 51file exists, then you must be listed therein in order to be allowed to use 52this command. If the 53.Pa allow 54file does not exist but the 55.Pa deny 56file does exist, then you must 57.Em not 58be listed in the 59.Pa deny 60file in order to use this command. If neither of these files exists, then 61depending on site-dependent configuration parameters, only the super user 62will be allowed to use this command, or all users will be able to use this 63command. 64The format of these files is one username per line, 65with no leading or trailing whitespace. 66Lines of other formats will be ignored, 67and so can be used for comments. 68.Pp 69The first form of this command is used to install a new crontab from some 70named file or standard input if the pseudo-filename ``-'' is given. 71.Pp 72The following options are available: 73.Bl -tag -width indent 74.It Fl u 75Specify the name of the user whose crontab is to be 76tweaked. If this option is not given, 77.Nm 78examines "your" crontab, i.e., the crontab of the person executing the 79command. Note that 80.Xr su 1 81can confuse 82.Nm 83and that if you are running inside of 84.Xr su 1 85you should always use the 86.Fl u 87option for safety's sake. 88.It Fl l 89Display the current crontab on standard output. 90.It Fl r 91Remove the current crontab. 92.It Fl e 93Edit the current crontab using the editor specified by 94the 95.Ev VISUAL 96or 97.Ev EDITOR 98environment variables. 99The specified editor 100.Em must 101edit the file in place; 102any editor that unlinks the file and recreates it cannot be used. 103After you exit 104from the editor, the modified crontab will be installed automatically. 105.El 106.Sh SEE ALSO 107.Xr crontab 5 , 108.Xr cron 8 109.Sh FILES 110.Bl -tag -width /var/cron/allow -compact 111.It Pa /var/cron/allow 112.It Pa /var/cron/deny 113.El 114.Sh STANDARDS 115The 116.Nm 117command conforms to 118.St -p1003.2 . 119This new command syntax 120differs from previous versions of Vixie Cron, as well as from the classic 121SVR3 syntax. 122.Sh DIAGNOSTICS 123A fairly informative usage message appears if you run it with a bad command 124line. 125.Sh AUTHORS 126.An Paul Vixie Aq paul@vix.com 127