Re: Executing a Script every hour
Thank god it's not all that obvious (as this thread implies), because when I first started to look at the cron and andcron man pages, I didn't really know where to start. I've set up a crontab entry in /etc/cron.d for my script, which I guess it the right way to go. I didn't use Kcron, which I didn't know about when I started. Chris On Friday 03 October 2003 04:22, Bijan Soleymani wrote: On Fri, Oct 03, 2003 at 01:04:04AM +0100, Pigeon wrote: On Wed, Oct 01, 2003 at 07:55:30PM -0700, Paul Johnson wrote: On Wed, Oct 01, 2003 at 12:15:19PM -0400, Derrick 'dman' Hudson wrote: anacron. cron and anacron solve similar problems but with a different approach based on different requirements. The two are not mutually exclusive. Ah. Well, that's for stuff that has to be run even when the machine's down. I'd love to be able to run stuff when my machine's down. :-) What did you actually mean? I don't know what he meant but the way I understand it, cron runs stuff at a specified time. For example you could set up logrotation to happen on tuesdays at 11:05 PM. Except what happens if the user turns off the machine at 10 oclock each night. Then the logs never get rotated. With anacron you say the logrotation should occur every X hours/days/etc the computer is on. P.S. I'm really not sure about this, I've never used anachron directly, though I have used cron a good deal. Bijan -- Dr.-Ing. Christof Hurschler Bodenstedtstr. 13 D-30173 Hannover +49-0172-5946909 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
Pigeon wrote: On Wed, Oct 01, 2003 at 07:55:30PM -0700, Paul Johnson wrote: On Wed, Oct 01, 2003 at 12:15:19PM -0400, Derrick 'dman' Hudson wrote: anacron. cron and anacron solve similar problems but with a different approach based on different requirements. The two are not mutually exclusive. Ah. Well, that's for stuff that has to be run even when the machine's down. I'd love to be able to run stuff when my machine's down. :-) What did you actually mean? cron runs program at specified times. if machine is down at the specified time the job does not run. anacron runs jobs with specified frequency, e.g. daily. So if the machine is up at least sometime the job is run... erik -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
On Wed, Oct 01, 2003 at 07:55:30PM -0700, Paul Johnson wrote: On Wed, Oct 01, 2003 at 12:15:19PM -0400, Derrick 'dman' Hudson wrote: anacron. cron and anacron solve similar problems but with a different approach based on different requirements. The two are not mutually exclusive. Ah. Well, that's for stuff that has to be run even when the machine's down. I'd love to be able to run stuff when my machine's down. :-) What did you actually mean? -- Pigeon Be kind to pigeons Get my GPG key here: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x21C61F7F pgp0.pgp Description: PGP signature
Re: Executing a Script every hour
On Fri, Oct 03, 2003 at 01:04:04AM +0100, Pigeon wrote: On Wed, Oct 01, 2003 at 07:55:30PM -0700, Paul Johnson wrote: On Wed, Oct 01, 2003 at 12:15:19PM -0400, Derrick 'dman' Hudson wrote: anacron. cron and anacron solve similar problems but with a different approach based on different requirements. The two are not mutually exclusive. Ah. Well, that's for stuff that has to be run even when the machine's down. I'd love to be able to run stuff when my machine's down. :-) What did you actually mean? I don't know what he meant but the way I understand it, cron runs stuff at a specified time. For example you could set up logrotation to happen on tuesdays at 11:05 PM. Except what happens if the user turns off the machine at 10 oclock each night. Then the logs never get rotated. With anacron you say the logrotation should occur every X hours/days/etc the computer is on. P.S. I'm really not sure about this, I've never used anachron directly, though I have used cron a good deal. Bijan -- Bijan Soleymani [EMAIL PROTECTED] http://www.crasseux.com signature.asc Description: Digital signature
Re: Executing a Script every hour
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Fri, Oct 03, 2003 at 01:04:04AM +0100, Pigeon wrote: Ah. Well, that's for stuff that has to be run even when the machine's down. I'd love to be able to run stuff when my machine's down. :-) What did you actually mean? Anacron runs cron jobs that were supposed to run when the machine comes back up if the machine was down at the time. - -- .''`. Paul Johnson [EMAIL PROTECTED] : :' : `. `'` proud Debian admin and user `- Debian - when you have better things to do than fix a system -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/fO88UzgNqloQMwcRAjXsAKDVkYk/L5p/gVkFqFFVqYM6lxxb5ACggesM 1XAUWQu7etK6iH7ty2ddB1M= =7wqC -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
Tha sounds like a very logical thing to do, as you can tell I'm a newbie.
Do you mean running the script from ip-up??
Maybe somone can tell me how to tell pppd to connect, i.e. without for
instance running ping?
Thanks,
Chris
* Christof Hurschler [EMAIL PROTECTED] [2003-09-30 15:04]:
$pop = Net::POP3-new('pop3host', Timeout = 60);
Perl, eh? Never played around with that language, sorry.
but I haven't been able to get it to work in swendelete, I always get
a can't connect to mail server error when I run swendelete.pl and
don't have an active connection (I'm usind demand in ppp).
Any suggestions?
Although I have no experience with the language, you may want to try
approaching the problem from the other end. If you can't get the
'Net::POP3' module to wait until the ppp daemon finishes connecting,
have the ppp daemon run your script as soon as it finishes connecting.
Then, instead of running your script every hour, have the daemon connect
every hour, then disconnect after a suitable period.
Just a thought...
Regards,
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Re: Executing a Script every hour
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Tue, Sep 30, 2003 at 10:11:19PM +0200, Christof Hurschler wrote: I've scanned the cron man pages, but it seems that cron is only set up to do daily, weekly, and monthly jobs in Debian. Where did you get that impression? man 5 crontab - -- .''`. Paul Johnson [EMAIL PROTECTED] : :' : `. `'` proud Debian admin and user `- Debian - when you have better things to do than fix a system -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/enLHUzgNqloQMwcRAlvLAKCPHaOpFCj8IjjJ7gxtjaVcdeILJwCgln2d 7D6ZKONALQmCZ5nIrnVh6eA= =tipS -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
* Christof Hurschler [EMAIL PROTECTED] [2003-09-30 22:17]: Tha sounds like a very logical thing to do, as you can tell I'm a newbie. Do you mean running the script from ip-up?? Assuming the script ip-up runs *after* the DSL connection is established, then yes. When it comes to dial-up/ppp connections I'm probably newer than you are, as I've never used them in Linux. However, the theory is sound. ;] Maybe somone can tell me how to tell pppd to connect, i.e. without for instance running ping? How do you connect currently? Does your system connect whenever you try to access a resource that's on the internet? Regards, -- dave [ please don't CC me ] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
I set the ppp option demand which like you said connects when I try to access the network. It terminates the connection after 60 seconds of no traffic. It takes maybe 20 seconds to connect (I haven't actually timed it), which isn't exactly instantaneous, but much faster than my old modem! I don't have a flat rate service so I don't want to stay connected all the time. Chris * Christof Hurschler [EMAIL PROTECTED] [2003-09-30 22:17]: Tha sounds like a very logical thing to do, as you can tell I'm a newbie. Do you mean running the script from ip-up?? Assuming the script ip-up runs *after* the DSL connection is established, then yes. When it comes to dial-up/ppp connections I'm probably newer than you are, as I've never used them in Linux. However, the theory is sound. ;] Maybe somone can tell me how to tell pppd to connect, i.e. without for instance running ping? How do you connect currently? Does your system connect whenever you try to access a resource that's on the internet? Regards, -- dave [ please don't CC me ] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED] -- Dr.-Ing. C. Hurschler [EMAIL PROTECTED] NEU FÜR ALLE - GMX MediaCenter - für Fotos, Musik, Dateien... Fotoalbum, File Sharing, MMS, Multimedia-Gruß, GMX FotoService Jetzt kostenlos anmelden unter http://www.gmx.net +++ GMX - die erste Adresse für Mail, Message, More! +++ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
* Christof Hurschler [EMAIL PROTECTED] [2003-10-01 04:41]: I set the ppp option demand which like you said connects when I try to access the network. It terminates the connection after 60 seconds of no traffic. It takes maybe 20 seconds to connect (I haven't actually timed it), which isn't exactly instantaneous, but much faster than my old modem! That's no kidding. I haven't used dial-up for years, and was very glad to get away from that! BTW - have you checked the man page/help files for pppd for examples on how to manually have pppd call out? The docs should be located in '/usr/share/doc/ppp'. Regards, -- dave [ please don't CC me ] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
On Tue, Sep 30, 2003 at 11:23:03PM -0700, Paul Johnson wrote: | On Tue, Sep 30, 2003 at 10:11:19PM +0200, Christof Hurschler wrote: | I've scanned the cron man pages, but it seems that cron is only | set up to do daily, weekly, and monthly jobs in Debian. | | Where did you get that impression? anacron. cron and anacron solve similar problems but with a different approach based on different requirements. The two are not mutually exclusive. -D -- Failure is not an option. It is bundled with the software. http://dman13.dyndns.org/~dman/ pgp0.pgp Description: PGP signature
Re: Executing a Script every hour
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Wed, Oct 01, 2003 at 12:15:19PM -0400, Derrick 'dman' Hudson wrote: anacron. cron and anacron solve similar problems but with a different approach based on different requirements. The two are not mutually exclusive. Ah. Well, that's for stuff that has to be run even when the machine's down. IIRC, anacron depends on cron. - -- .''`. Paul Johnson [EMAIL PROTECTED] : :' : `. `'` proud Debian admin and user `- Debian - when you have better things to do than fix a system -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/e5OiUzgNqloQMwcRAoP+AKDB35h1C4ft4IDCIfAXDQ+B3esVZwCgumtV eqb+KGvIwWcVMQsmKIxmMaQ= =C2Yw -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Executing a Script every hour
Hi, I've scanned the cron man pages, but it seems that cron is only set up to do daily, weekly, and monthly jobs in Debian. Is there a simpe way to have a script execute at shorter time intervals. I'd like to run the swendeleter.pl script automatically every so often to keep my mailbox from overfiling. Thanks, Chris -- Dr.-Ing. Christof Hurschler Bodenstedtstr. 13 D-30173 Hannover +49-0172-5946909 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
On Tue, 2003-09-30 at 15:11, Christof Hurschler wrote: Hi, I've scanned the cron man pages, but it seems that cron is only set up to do daily, weekly, and monthly jobs in Debian. Is there a simpe way to have a script execute at shorter time intervals. I'd like to run the swendeleter.pl script automatically every so often to keep my mailbox from overfiling. Actually, cron will let you start a job by minute. Take a look at: man crontab man 5 crontab -- Alex Malinovich Support Free Software, delete your Windows partition TODAY! Encrypted mail preferred. You can get my public key from any of the pgp.net keyservers. Key ID: A6D24837 signature.asc Description: This is a digitally signed message part
Re: Executing a Script every hour
Christof Hurschler wrote: Hi, I've scanned the cron man pages, but it seems that cron is only set up to do daily, weekly, and monthly jobs in Debian. Is there a simpe way to have a script execute at shorter time intervals. I'd you can specify the values separated by commas, example for minutes: 00,15,30,45 * ... would be executed every 15 minutes there are other ways to specify when it should be run, read man 5 crontab carefully (not man crontab), 5 is section traditionally used for file formats erik -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
Christof Hurschler [EMAIL PROTECTED] writes: I've scanned the cron man pages, but it seems that cron is only set up to do daily, weekly, and monthly jobs in Debian. Is there a simpe way to have a script execute at shorter time intervals. I'd like to run the swendeleter.pl script automatically every so often to keep my mailbox from overfiling. Use crontab(1), like on every other Unix. :-) If you need some other frequency for a package or system script, you could drop a crontab fragment in /etc/cron.d; see crontab(5) for the format, and pretend these are parts of the system crontab file. -- David Maze [EMAIL PROTECTED] http://people.debian.org/~dmaze/ Theoretical politics is interesting. Politicking should be illegal. -- Abra Mitchell -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
* Christof Hurschler [EMAIL PROTECTED] [2003-09-30 12:35]: Is there a simpe way to have a script execute at shorter time intervals. I'd like to run the swendeleter.pl script automatically every so often to keep my mailbox from overfiling. I think you looked in the wrong place (took me a while, as well), from 'man 5 crontab': #v+ Commands are executed by cron(8) when the minute, hour, and month of year fields match the current time, and when at least one of the two day fields (day of month, or day of week) match the current time (see ``Note'' below). cron(8) examines cron entries once every minute. The time and date fields are: field allowed values - -- minute 0-59 hour0-23 day of month1-31 month 1-12 (or names, see below) day of week 0-7 (0 or 7 is Sun, or use names) #v- Hope that helps... Regards, -- dave [ please don't CC me ] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
On Tue, 30 Sep 2003 22:11:19 +0200, Christof Hurschler [EMAIL PROTECTED] penned: Hi, I've scanned the cron man pages, but it seems that cron is only set up to do daily, weekly, and monthly jobs in Debian. Is there a simpe way to have a script execute at shorter time intervals. I'd like to run the swendeleter.pl script automatically every so often to keep my mailbox from overfiling. Thanks, Chris The keyword for an hourly job is @hourly, or you could use I believe 0 0 * * * -- monique -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
On Tue, Sep 30, 2003 at 10:11:19PM +0200, Christof Hurschler wrote: Hi, I've scanned the cron man pages, but it seems that cron is only set up to do daily, weekly, and monthly jobs in Debian. Is there a simpe way to have a script execute at shorter time intervals. I'd like to run the swendeleter.pl script automatically every so often to keep my mailbox from overfiling. Use either the system crontab (/etc/crontab) or set up your own personal one. man crontab Kenward -- In a completely rational society, the best of us would aspire to be _teachers_ and the rest of us would have to settle for something less, because passing civilization along from one generation to the next ought to be the highest honor and the highest responsibility anyone could have. - Lee Iacocca -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
To get access to your cron conf file run $crontab -e It will open up your defualt editor. This means you do not have to be root to change cron run times. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
On Tue, 30 Sep 2003, Christof Hurschler wrote: Hi, I've scanned the cron man pages, but it seems that cron is only set up to do daily, weekly, and monthly jobs in Debian. Is there a simpe way to have a script execute at shorter time intervals. I'd like to run the swendeleter.pl script automatically every so often to keep my mailbox from overfiling. Hi, Pretty easy to do. Become to use you want the script to run as (root or yourself) crontab -e then add the line 0 * * * * /path/to/swendeleter.pl That should do it rgds rus -- w: http://www.jvps.com | Linux + FreeBSD Servers from $15/mo e: [EMAIL PROTECTED]| Dedicated Servers from $119/mo t: +44 7919 373537 | email: [EMAIL PROTECTED] t: 1-888-327-6330 | email: [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Executing a Script every hour
At 2003-09-30T20:47:44Z, Erik Steffl [EMAIL PROTECTED] writes: 00,15,30,45 * ... would be executed every 15 minutes */15 is a handy shortcut for the same thing. That's particularly handy for jobs that need to run, say, every 3 minutes. -- Kirk Strauser In Googlis non est, ergo non est. pgp0.pgp Description: PGP signature
Re: Executing a Script every hour
Thanks,
I figured it out! I now have another problem. The script I'm using is
connecting to the mail server using the Net::POP3 module, and it's timing out
before I can establish my DSL connection. The module supposedly takes a Timeout
command i.e.
$pop = Net::POP3-new('pop3host', Timeout = 60);
but I haven't been able to get it to work in swendelete, I always get a
can't connect to mail server error when I run swendelete.pl and don't have an
active connection (I'm usind demand in ppp).
Any suggestions?
* Christof Hurschler [EMAIL PROTECTED] [2003-09-30 12:35]:
Is there a simpe way to have a script execute at shorter time
intervals. I'd like to run the swendeleter.pl script automatically
every so often to keep my mailbox from overfiling.
I think you looked in the wrong place (took me a while, as well), from
'man 5 crontab':
#v+
Commands are executed by cron(8) when the minute, hour, and
month of year fields match the current time, and when at least one
of the two day fields (day of month, or day of week) match the
current time (see ``Note'' below). cron(8) examines cron
entries once every minute. The time and date fields are:
field allowed values
- --
minute 0-59
hour0-23
day of month1-31
month 1-12 (or names, see below)
day of week 0-7 (0 or 7 is Sun, or use names)
#v-
Hope that helps...
Regards,
--
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Re: Executing a Script every hour
* Christof Hurschler [EMAIL PROTECTED] [2003-09-30 15:04]:
$pop = Net::POP3-new('pop3host', Timeout = 60);
Perl, eh? Never played around with that language, sorry.
but I haven't been able to get it to work in swendelete, I always get
a can't connect to mail server error when I run swendelete.pl and
don't have an active connection (I'm usind demand in ppp).
Any suggestions?
Although I have no experience with the language, you may want to try
approaching the problem from the other end. If you can't get the
'Net::POP3' module to wait until the ppp daemon finishes connecting,
have the ppp daemon run your script as soon as it finishes connecting.
Then, instead of running your script every hour, have the daemon connect
every hour, then disconnect after a suitable period.
Just a thought...
Regards,
--
dave [ please don't CC me ]
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