HP-UX Reference (11i v1 05/09) - 1 User Commands A-M (vol 1)

c
crontab(1) crontab(1)
Blank lines and those whose first non-blank character is # will be ignored.
cron invokes the command from the user’s
HOME directory with the POSIX shell, (/usr/bin/sh). It
runs in the
c queue (see queuedefs(4)).
cron supplies a default environment for every shell, defining:
HOME=user’s-home-directory
LOGNAME=user’s-login-id
PATH=/usr/bin:/usr/sbin:.
SHELL=/usr/bin/sh
Users who desire to have their .profile executed must explicitly do so in the crontab entry or in a script
called by the entry.
You can execute crontab if your name appears in the file
/usr/lib/cron/cron.allow
. If that file
does not exist, you can use
crontab if your name does not appear in the file
/usr/lib/cron/cron.deny
. If only
cron.deny exists and is empty, all users can use crontab.
If neither file exists, only the
root user can use crontab. The allow/deny files consist of one user
name per line.
EXTERNAL INFLUENCES
Environment Variables
LC_CTYPE determines the interpretation of text within file as single- and/or multi-byte characters.
LC_MESSAGES determines the language in which messages are displayed.
If LC_CTYPE or LC_MESSAGES is not specified in the environment or is set to the empty string, the
value of LANG is used as a default for each unspecified or empty variable. If
LANG is not specified or is
set to the empty string, a default of "C" (see lang(5)) is used instead of
LANG.
If any internationalization variable contains an invalid setting,
crontab behaves as if all internationali-
zation variables are set to "C". See environ(5).
EDITOR determines the editor to be invoked when
-e
option is specified. The default editor is vi.
International Code Set Support
Single-byte and multi-byte character code sets are supported.
WARNINGS
Be sure to redirect the standard output and standard error from commands. If this is not done, any gen-
erated standard output or standard error is mailed to the user.
FILES
/var/adm/cron Main cron directory
/var/adm/cron/cron.allow
List of allowed users
/var/adm/cron/cron.deny
List of denied users
/var/adm/cron/log
Accounting information
/var/spool/cron/crontabs
Directory containing the crontab files
SEE ALSO
sh(1), cron(1M), queuedefs(4).
STANDARDS CONFORMANCE
crontab: SVID2, SVID3, XPG2, XPG3, XPG4
Section 1−−126 Hewlett-Packard Company − 2 − HP-UX 11i Version 1: September 2005