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Cron Sandbox

dar ksyte [dksyte at googlemail.com]


Tue, 17 Jun 2008 10:09:21 +0100

Google brought me to you. You might be interested in this new resource for experimenting with crontab commands.

For most of us, setting up a new cron job is not something we do every day. So we can easily forget the details.

Cron Sandbox at HxPI offers an opportunity to play with the crontab scheduling commands in safety.

Type in the 'm h D M Dw' parameters and see a calendar of job execution times/dates.

http://www.hxpi.com/cron_sandbox.php

Regards

Dar Ksyte


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Joey Prestia [joey at linuxamd.com]


Tue, 17 Jun 2008 07:40:43 -0700

dar ksyte wrote:

> Google brought me to you. You might be interested in this new resource for
> experimenting with crontab commands.
> 
> For most of us, setting up a new cron job is not something we do every day.
> So we can easily forget the details.

That is true, and one should use always use caution when using cron an improperly set up crontab can cause problems.

> Cron Sandbox at HxPI offers an opportunity to play with the crontab
> scheduling commands in safety.
> 
> Type in the 'm h D M Dw' parameters and see a calendar of job execution
> times/dates.
> www.hxpi.com/cron_sandbox.php

That is a neat little tool for people that are uncertain of the possible results of their crontab syntax. Thanks for the link.

Best,

-- 
Joey Prestia


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Thomas Bonham [thomasbonham at bonhamlinux.org]


Tue, 17 Jun 2008 09:31:07 -0700

Joey Prestia wrote:

> dar ksyte wrote:
>   
>> Google brought me to you. You might be interested in this new resource for
>> experimenting with crontab commands.
>>
>> For most of us, setting up a new cron job is not something we do every day.
>> So we can easily forget the details.
>>     
>
> That is true, and one should use always use caution when using cron an
> improperly set up crontab can cause problems.
>
>   
>> Cron Sandbox at HxPI offers an opportunity to play with the crontab
>> scheduling commands in safety.
>>
>> Type in the 'm h D M Dw' parameters and see a calendar of job execution
>> times/dates.
>>     
>> www.hxpi.com/cron_sandbox.php
>>
>
> That is a neat little tool for people that are uncertain of the possible
> results of their crontab syntax. Thanks for the link.
>
> Best,
>
>   
Here is a little web page that I wrote last spring for crontab.

http://bonhamlinux.org/crontab

Thomas


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Ben Okopnik [ben at linuxgazette.net]


Sat, 21 Jun 2008 13:23:49 -0700

On Tue, Jun 17, 2008 at 09:31:07AM -0700, Thomas Bonham wrote:

> dar ksyte wrote:
>>
>> Cron Sandbox at HxPI offers an opportunity to play with the crontab
>> scheduling commands in safety.
>>
>> Type in the 'm h D M Dw' parameters and see a calendar of job
>> execution times/dates.
>
>> www.hxpi.com/cron_sandbox.php
>   
> Here is a little web page that I wrote last spring for crontab.
> 
> http://bonhamlinux.org/crontab

Unfortunately, your page doesn't perform any validation or parsing of the arguments, or show when the specified entry would run; the one referred to by the OP does. I don't mean to knock your effort, but it's not the same category of thing at all.

'crontab', as Joey showed in his article, is a fairly complex beast, and checking its syntax is a good idea for those who aren't yet comfortable with it, is a good idea.

-- 
* Ben Okopnik * Editor-in-Chief, Linux Gazette * http://LinuxGazette.NET *


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Ben Okopnik [ben at linuxgazette.net]


Sat, 21 Jun 2008 13:30:00 -0700

On Sat, Jun 21, 2008 at 01:23:49PM -0700, Benjamin Okopnik wrote:

> 
> 'crontab', as Joey showed in his article, is a fairly complex beast, and
> checking its syntax is a good idea for those who aren't yet comfortable
> with it, is a good idea.

Erm... have I mentioned that it's a good idea? It's a really good idea. :)

-- 
* Ben Okopnik * Editor-in-Chief, Linux Gazette * http://LinuxGazette.NET *


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Rick Moen [rick at linuxmafia.com]


Sat, 21 Jun 2008 22:04:24 -0700

Quoting Ben Okopnik ([email protected]):

> On Sat, Jun 21, 2008 at 01:23:49PM -0700, Benjamin Okopnik wrote:
> > 
> > 'crontab', as Joey showed in his article, is a fairly complex beast, and
> > checking its syntax is a good idea for those who aren't yet comfortable
> > with it, is a good idea.
> 
> Erm... have I mentioned that it's a good idea? It's a really good idea.
> :)

Nah, just throw things into crontab without bothering to check them. It'll be a valuable and fun learning experience!

The only way you can have even more fun than that is to jam poorly debugged scripts into /etc/inittab lines with the "respawn" keyword. Preferably on a production server. That's Heap Big Fun! Try it _today_!

-- 
Cheers,     "Learning Java has been a slow and tortuous process for me.  Every 
Rick Moen   few minutes, I start screaming 'No, you fools!' and have to go
[email protected]       read something from _Structure and Interpretation of
            Computer Programs_ to de-stress."   -- The Cube, www.forum3000.org


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Neil Youngman [ny at youngman.org.uk]


Sun, 22 Jun 2008 16:48:59 +0100

On Sunday 22 June 2008 06:04, Rick Moen wrote:

> Cheers,  "Learning Java has been a slow and tortuous process for me.
> Every Rick Moen  few minutes, I start screaming 'No, you fools!' and have
> to go [email protected]  read something from _Structure and
> Interpretation of Computer Programs_ to de-stress."  -- The Cube,
> www.forum3000.org

[[[ Okay, I know that this is misformatted, and not how Rick's .sig read. But I find it so funny that I left it, after converting the garbage chars (tabs that didn't read in correctly). -- Kat ]]]

I only see a link farm at www.forum3000.org?

Neil


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Ben Okopnik [ben at linuxgazette.net]


Sun, 22 Jun 2008 09:00:13 -0700

On Sun, Jun 22, 2008 at 04:48:59PM +0100, Neil Youngman wrote:

> On Sunday 22 June 2008 06:04, Rick Moen wrote:
> > Cheers,  "Learning Java has been a slow and tortuous process for me.
> > Every Rick Moen  few minutes, I start screaming 'No, you fools!' and have
> > to go [email protected]  read something from _Structure and
> > Interpretation of Computer Programs_ to de-stress."  -- The Cube,
> > www.forum3000.org
> 
> I only see a link farm at www.forum3000.org?

To paraphrase Neil Young (rather apropos choice, don't you think? :), "Link rot never sleeps."

-- 
* Ben Okopnik * Editor-in-Chief, Linux Gazette * http://LinuxGazette.NET *


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Rick Moen [rick at linuxmafia.com]


Sun, 22 Jun 2008 11:05:49 -0700

Quoting Neil Youngman ([email protected]):

> I only see a link farm at www.forum3000.org?

Now, yes.

You used to be able to see a subset of the glory that was http://www.forum3000.org/ at the Internet Archive / Wayback Machine, but I see that the snapshots of the former site are no longer available there. Pity: It was inspired.

This site implements the same concept, but I don't find the writing nearly as good: http://forum2010.org/

A few of the Forum3000 dialogues are here, but even those are missing most of the images of the "simulated personalities" who participate: http://web.archive.org/web/20060629055124/aardvarko.snappyanswers.com/mirrors/xalton.forum2000.org/matrix/forum_hof_questions.html

(You'll mostly get "not in archive" links.)


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