CRONTAB(1) USER COMMANDS CRONTAB(1)
NAME
crontab - install, edit, remove or list a user's crontab
file
SYNOPSIS
crontab [ filename ]
crontab -e [ username ]
crontab -l [ username ]
crontab -r [ username ]
DESCRIPTION
crontab copies the specified file, or the standard input if
no file is specified, into a directory that holds all users'
crontab files. A user's crontab file lists commands that
are to be executed on behalf of that user at specified times
on specified dates; the format of these files is described
in crontab(5).
If the file /var/spool/cron/cron.allow exists, only users
whose username appears in it can use crontab. If that file
does not exist, however, crontab checks the
/var/spool/cron/cron.deny file to determine if the user
should be denied the use of crontab. If neither file
exists, only the super-user is allowed to submit a crontab
job. If cron.allow does not exist and cron.deny exists and
is empty, global usage is permitted. The allow/deny files
consist of one user name per line.
OPTIONS
-e Make a copy of the current user's crontab file, or
create an empty file if it does not exist, and edit
that file. The vi(1) editor will be used unless the
environment variable VISUAL or EDITOR indicates an
alternate editor. When editing is complete, install
the file as the user's crontab file if it was modified.
If a username is given, the specified user's crontab
file is edited, rather than the current user's crontab
file; this may only be done by the super-user.
-l List the user's crontab file.
-r Remove the current user's crontab file from the crontab
directory. If a username is given, the specified
user's crontab file is removed, rather than the current
user's crontab file; this may only be done by the
super-user.
FILES
/var/spool/cron main cron directory
/var/spool/cron/crontabs spool area
/var/spool/cron/cron.allow
list of allowed users
/var/spool/cron/cron.deny
list of denied users
SEE ALSO
sh(1), crontab(5), cron(8)
WARNINGS
If you inadvertently enter the crontab command with no argu-
ment, do not attempt to get out by typing CTRL-D. This
removes all entries in your crontab file. Instead, exit by
typing your interrupt character (normally CTRL-C).
Sun Release 4.1 Last change: 9 September 1987
REPORTS
Analyize In-Line NAC strategies and products.
ANALYTICS Plan and design your enterprise blade server deployments
InformationWeek U.S. IT Salary Survey 2008
Salaries for business technology professionals are falling. Here's what you need to know in order to make good hiring decisions and personal career choices. Download Today
REPORTS
ANALYTICS
Follow 
