12:37 p.m.
Hello,
Before (fedora 10) the default file /etc/crontab was not empty.
On my new fedora13 it is just almost empty.
So I guess that the cron files are never run and there is probably a
tool to manage it.
Could you guide me ?
thank.
--
---
==========================================================================
Patrick DUPRÉ | |
Department of Chemistry | | Phone: (44)-(0)-1904-434384
The University of York | | Fax: (44)-(0)-1904-432516
Heslington | |
York YO10 5DD United Kingdom | | email: patrick.dupre(a)york.ac.uk
==========================================================================
8:49 a.m.
New subject: Revisiting cron -- Re: crontab
On Thu, 18 Nov 2010 09:35:16 -0500
Robert Moskowitz wrote:
Then why is it still there, leading one to think they can edit it for
global cron jobs?
You can edit it for global cron jobs (or you can drop files
in the /etc/cron.d/ directory). In fact I do edit it: I move
everything out of the /etc/anacrontab file and back into
/etc/crontab where it will run at a known time rather than
a random time (or course, I have to change the syntax and
say what time I want it to run).
10:05 a.m.
New subject: Revisiting cron -- Re: crontab
On Thu, 18 Nov 2010 10:58:14 -0500, Robert wrote:
> My /etc/crontab
> file certainly seems to have a user field:
>
> 01 * * * * root run-parts /etc/cron.hourly
> 02 4 * * * root run-parts /etc/cron.daily
> 22 4 * * 0 root run-parts /etc/cron.weekly
> 42 4 1 * * root run-parts /etc/cron.monthly
>
I am just observing the comments in the file:
# Example of job definition:
# .---------------- minute (0 - 59)
# | .------------- hour (0 - 23)
# | | .---------- day of month (1 - 31)
# | | | .------- month (1 - 12) OR jan,feb,mar,apr ...
# | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR
sun,mon,tue,wed,thu,fri,sat
# | | | | |
# * * * * * command to be executed
No user field specifed...
That's because the documentation in /etc/crontab is wrong.
I've pointed that out in a recent crontabs package update ticket,
but haven't filed a separate bug report about it due to lack of time.
9:58 a.m.
New subject: Revisiting cron -- Re: crontab
On 11/18/2010 10:30 AM, Tom Horsley wrote:
On Thu, 18 Nov 2010 10:05:08 -0500
Robert Moskowitz wrote:
> OK. But what about:
> http://mailman.linuxchix.org/pipermail/courses/2004-February/001389.html
> which is old, but says that there is a user field in the /etc/crontab
> version? Is there?
>
The crontab(5) man page says there is (if you read it 5 or six
times to decrypt the convoluted description :-).
Us dyslexics have to read it 7-9 times! Thanks.
My /etc/crontab
file certainly seems to have a user field:
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly
I am just observing the comments in the file:
# Example of job definition:
# .---------------- minute (0 - 59)
# | .------------- hour (0 - 23)
# | | .---------- day of month (1 - 31)
# | | | .------- month (1 - 12) OR jan,feb,mar,apr ...
# | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR
sun,mon,tue,wed,thu,fri,sat
# | | | | |
# * * * * * command to be executed
No user field specifed...
Well I will remove the /var/spool/cron/root file and go with the
/etc/crontab, as it is easier to document what you have customized on a
system this way (IMNSHO).
9:30 a.m.
New subject: Revisiting cron -- Re: crontab
On Thu, 18 Nov 2010 10:05:08 -0500
Robert Moskowitz wrote:
OK. But what about:
http://mailman.linuxchix.org/pipermail/courses/2004-February/001389.html
which is old, but says that there is a user field in the /etc/crontab
version? Is there?
The crontab(5) man page says there is (if you read it 5 or six
times to decrypt the convoluted description :-). My /etc/crontab
file certainly seems to have a user field:
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly
9:05 a.m.
New subject: Revisiting cron -- Re: crontab
On 11/18/2010 09:49 AM, Tom Horsley wrote:
On Thu, 18 Nov 2010 09:35:16 -0500
Robert Moskowitz wrote:
> Then why is it still there, leading one to think they can edit it for
> global cron jobs?
>
You can edit it for global cron jobs (or you can drop files
in the /etc/cron.d/ directory). In fact I do edit it: I move
everything out of the /etc/anacrontab file and back into
/etc/crontab where it will run at a known time rather than
a random time (or course, I have to change the syntax and
say what time I want it to run).
OK. But what about:
http://mailman.linuxchix.org/pipermail/courses/2004-February/001389.html
which is old, but says that there is a user field in the /etc/crontab
version? Is there?
8:35 a.m.
New subject: Revisiting cron -- Re: crontab
On 10/09/2010 03:25 PM, Steven Stern wrote:
On 10/09/2010 12:37 PM, Patrick Dupre wrote:
> Before (fedora 10) the default file /etc/crontab was not empty.
> On my new fedora13 it is just almost empty.
> So I guess that the cron files are never run and there is probably a
> tool to manage it.
> Could you guide me ?
Individual cron files are in /var/spool/cron
/etc/crontab doesn't do anything.
Then why is it still there, leading one to think they can edit it for
global cron jobs?
Shouldn't it have some text in it like:
# This file is now dead. It is only here for historical purposes.
# Either use anacron or user crontabs.
Or some such?
I am getting ready to FINALLY really do something with cron, and I
wanted to use /etc/crontab rather than root's crontab. And reading docs,
some refer to a line needed in this file as the user that the command
runs under, yet the comments in the file do not include a user field.
That got me back to this list, and before asking, I did a search and
found this thread. One frustrating thing is that if you use "crontab -e"
you have no direct guidance as to the fields (no comment lines put there
by default).
Also is EMAIL by default to the user (in my case root) unless you have
"MAILTO=" ?
2:51 p.m.
On 10/09/2010 12:34 PM, Tom Horsley wrote:
On Sat, 9 Oct 2010 20:12:31 +0100 (BST)
Patrick Dupre wrote:
>> The cron.daily is still there, it is just being triggered by
>> anacron now (by default).
> Sorry, I wanted to say hourly !
Hmmm... Not sure, doesn't look like it is there in the
/etc/anacrontab anymore, but I think it is still being
run by cron and has moved from /etc/crontab to
/etc/cron.d/0hourly
Which is as it should be. Anacron is not for hourly
because it doe snot assume the system is running
continuously. Man page says:
ANACRON(8) Anacron Users’ Manual ANACRON(8)
NAME
anacron - runs commands periodically
SYNOPSIS
anacron [-s] [-f] [-n] [-d] [-q] [-t anacrontab] [-S spooldir] [job]
anacron [-S spooldir] -u [-t anacrontab] [job]
anacron [-V|-h]
anacron -T [-t anacrontab]
DESCRIPTION
Anacron is used to execute commands periodically, with a frequency
specified in days. Unlike cron(8), it does not assume that the machine
is running continuously. Hence, it can be used on machines that aren’t
running 24 hours a day, to control regular jobs as daily, weekly, and
monthly jobs.
2:34 p.m.
On Sat, 9 Oct 2010 20:12:31 +0100 (BST)
Patrick Dupre wrote:
> The cron.daily is still there, it is just being triggered by
> anacron now (by default).
Sorry, I wanted to say hourly !
Hmmm... Not sure, doesn't look like it is there in the
/etc/anacrontab anymore, but I think it is still being
run by cron and has moved from /etc/crontab to
/etc/cron.d/0hourly
2:25 p.m.
On 10/09/2010 12:37 PM, Patrick Dupre wrote:
Hello,
Before (fedora 10) the default file /etc/crontab was not empty.
On my new fedora13 it is just almost empty.
So I guess that the cron files are never run and there is probably a
tool to manage it.
Could you guide me ?
thank.
Individual cron files are in /var/spool/cron
/etc/crontab doesn't do anything.
Check /etc/cron.hourly, cron.daily, etc.
[sdstern@sds-desk etc]$ ls -ld cron*
drwxr-xr-x. 2 root root 4096 Aug 17 11:53 cron.d
drwxr-xr-x. 2 root root 4096 Sep 27 07:56 cron.daily
-rw-r--r--. 1 root root 0 Aug 13 08:53 cron.deny
drwxr-xr-x. 2 root root 4096 Aug 17 11:53 cron.hourly
drwxr-xr-x. 2 root root 4096 Jun 12 11:03 cron.monthly
-rw-r--r--. 1 root root 448 Oct 12 2009 crontab
drwxr-xr-x. 2 root root 4096 Oct 12 2009 cron.weekly
to edit an individual account, su to that account and use crontab -e.
--
-- Steve
2:12 p.m.
On Sat, 9 Oct 2010, Tom Horsley wrote:
On Sat, 9 Oct 2010 18:54:52 +0100 (BST)
Patrick Dupre wrote:
> But their is not anymore cron.daily by default ?
> Should it run by crontab ?
The cron.daily is still there, it is just being triggered by
anacron now (by default).
Sorry, I wanted to say hourly !
--
---
==========================================================================
Patrick DUPRÉ | |
Department of Chemistry | | Phone: (44)-(0)-1904-434384
The University of York | | Fax: (44)-(0)-1904-432516
Heslington | |
York YO10 5DD United Kingdom | | email: patrick.dupre(a)york.ac.uk
==========================================================================
12:54 p.m.
On Sat, 9 Oct 2010, Tom Horsley wrote:
On Sat, 9 Oct 2010 18:37:27 +0100 (BST)
Patrick Dupre wrote:
> Before (fedora 10) the default file /etc/crontab was not empty.
> On my new fedora13 it is just almost empty.
> So I guess that the cron files are never run and there is probably a
> tool to manage it.
> Could you guide me ?
Everything is run by anacron these days (and I have to go to lots
of trouble to disable it now). See /etc/anacrontab for the same
sort of stuff that used to be in crontab (which will now be run at
some randomly selected totally inconvenient time instead of on
a reliable schedule).
OK
But their is not anymore cron.daily by default ?
Should it run by crontab ?
--
---
==========================================================================
Patrick DUPRÉ | |
Department of Chemistry | | Phone: (44)-(0)-1904-434384
The University of York | | Fax: (44)-(0)-1904-432516
Heslington | |
York YO10 5DD United Kingdom | | email: patrick.dupre(a)york.ac.uk
==========================================================================
12:50 p.m.
On Sat, 9 Oct 2010 18:37:27 +0100 (BST)
Patrick Dupre wrote:
Before (fedora 10) the default file /etc/crontab was not empty.
On my new fedora13 it is just almost empty.
So I guess that the cron files are never run and there is probably a
tool to manage it.
Could you guide me ?
Everything is run by anacron these days (and I have to go to lots
of trouble to disable it now). See /etc/anacrontab for the same
sort of stuff that used to be in crontab (which will now be run at
some randomly selected totally inconvenient time instead of on
a reliable schedule).
4907
days inactive
4947
days old
13 comments
6 participants
participants (6)
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JD -
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Patrick Dupre -
Robert Moskowitz -
SternData -
Tom Horsley