Per Second Cron Jobs?

Apr 5, 2009

Hey everyone, my friend's dad is looking for a web host that will allow his cron jobs to run every second. Most hosts apparently dont allow cron jobs faster than 5 seconds apart.

How often a host can run cron jobs isn't really advertised on their sites so I'm having a bit of trouble finding a host. I've resorted to just sending emails to sales addresses asking about it.

Does anyone know how I can find a host like this?

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How To Schedual Cron Jobs

Oct 24, 2009

I have a number of PHP scripts that I would like to automatically run daily at midnight. I am currently running a VPS server but have no idea how to achieve this. I do have webmin on my sever but am unsure of what command I need to run.

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Cron Jobs Not Running

Jan 5, 2008

I have a machine, that for some reason stopped running it's cron jobs for some reason, and I can figure out how to get them working again.

My /etc/crontab file is as follows.


# run-parts
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
Here are the contents of a sample user cron file.

10 4 * * * php -q -f /home/USER/public_html/tools/updtransfers.php /home/USER/public_html >/dev/null 2>&1
10 5 * * * php -q -f /home/USER/public_html/tools/updateexp.php /home/USER/public_html >/dev/null 2>&1
10 5 * * * php -q -f /home/USER/public_html/tools/invoice_cron.php /home/USER/public_html >/dev/null 2>&1
and another

*/5 * * * * /usr/local/bin/php -c /home/USER/php.ini /home/USER/public_html/poller.php > /dev/null 2>&1
I've checked my logs, and I can find no errors anywhere. When I run the commands manually via SSH, they work perfectly, they simply are not being run automatically the way they are supposed to be.

I have checked, and the crond service is running. I have tried restarting it, but it seams to have no affect. I really have no idea what the issue is. The only thing I seam to have found at one point, was the possibility that the files within the /etc/cron.d directory might be CHMOD'ed wrong, but I haven't found anything to confirm this either way.

[root@server cron.d]# ls -all
total 60
drwxr-xr-x 2 root root 4096 Dec 17 03:07 .
drwx--x--x 94 root root 12288 Jan 3 09:28 ..
-rw-r--r-- 1 root root 61 Jun 22 2007 csf_update
-rw-r--r-- 1 root root 81 Apr 11 2007 lsm
-rw-r--r-- 1 root root 79 Jun 22 2007 prm
-rw------- 1 root root 366 Feb 23 2007 sa-update
-rw-r--r-- 1 root root 82 Jun 22 2007 spri
-rw-r--r-- 1 root root 188 Nov 16 23:14 sysstat
[root@server cron.d]#

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Cron Jobs Failing

Jun 24, 2007

I have jobs that fail every now and then. I get this email:

Looking up
Making HTTP connection to
Sending HTTP request.
HTTP request sent; waiting for response.
Alert!: Unexpected network read error; connection aborted.
Can't Access [url]
Alert!: Unable to access document.

lynx: Can't access startfile

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Software To Control Cron Jobs?

May 14, 2008

Is there any software which would control cron jobs? I've a problem with cpu load where some customers are running more than enough of them at the same time.

Is there any software which would be able to:

If there are more than x crons running at the same time, put others in queue and execute after there are no more than x-1 are running?

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How To Schedule Cron Jobs In Windows

Dec 7, 2008

how to set cron jobs in window....

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Cron Jobs Not Executing PHP Files

Jun 16, 2008

I have a new dedicated server and am trying to set up a cron job via CPanel on on of my accounts (we'll call it "abc" account).

In the Cron job area, where it asks for the command to run, I enter this:


But when the job runs, it doesn't seem to be executing the .php file. Instead, I get stuff like this via email:

/home/acb/public_html/forum/class/sendnotice.php: line 1: ?php: No such file or directory
/home/abc/public_html/forum/class/sendnotice.php: line 2: ////////////////////////////: is a directory
/home/abc/public_html/forum/class/sendnotice.php: line 3: //: is a directory
/home/abc/public_html/forum/class/sendnotice.php: line 4: //: is a directory
/home/abc/public_html/forum/class/sendnotice.php: line 5: //: is a directory
/home/abc/public_html/forum/class/sendnotice.php: line 6: //: is a directory
/home/abc/public_html/forum/class/sendnotice.php: line 7: //: is a directory
/home/abc/public_html/forum/class/sendnotice.php: line 8: //: is a directory
/home/abc/public_html/forum/class/sendnotice.php: line 9: //: is a directory

So it is as if the cron job is reading each line of the .php file instead of just running it. Am I doing something wrong in setting up the cron job to run that file or could it be a configuration issue with the new server?

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Plesk 11.x / Linux :: How To Set Cron Jobs

Dec 24, 2014

How I can set CronJobs? Have never to it before.

Here is what i have from developer:

Final Step: Setup Cron Tasks.

Number of cron (background) tasks to ensure redundant files are deleted, accounts are auto downgraded etc. Details of these are below.

0 0 * * * php /var/www/vhosts/MYDOMAIN/httpdocs/admin/tasks/auto_prune.cron.php >> /dev/null 2>&1
0 0 * * * php /var/www/vhosts/MYDOMAIN/httpdocs/admin/tasks/create_internal_notifications.cron.php >> /dev/null 2>&1
0 * * * * php /var/www/vhosts/MYDOMAIN/httpdocs/admin/tasks/delete_redundant_files.cron.php >> /dev/null 2>&1
0 0 * * * php /var/www/vhosts/MYDOMAIN/httpdocs/admin/tasks/downgrade_accounts.cron.php >> /dev/null 2>&1
*/5 * * * * php /var/www/vhosts/MYDOMAIN/httpdocs/admin/tasks/process_file_queue.cron.php >> /dev/null 2>&1

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Free Hosting With Access To Cron Jobs?

Oct 25, 2008

I need a reliable, free host where I can run wget on a URL (less than 1k) every 10 minutes via a cron job.

Can anyone reccommend anything?

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Cron Jobs And Time Zone Differences

Apr 11, 2009

I have a customer billing system.

I would like crons to run at midnight so that the invoices are on schedule and have the right dates etc.

My server is overseas and my time is plus 14 hrs here.

I have set my software up to plus 14 hrs time difference also.

What should I set my crons to?

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Determine What Cron Jobs Are Killing Server And When

Jan 8, 2009

We're running on Linux/Apache/MySQL/RoR and have a number of cron jobs that run throughout the day on our server. We've been noticing lately that at certain times of the day the site becomes really slow. When I'm online with my engineers I can mention this to them and they can check and see and say "Oh yeah, it's job XYZ that's spiking the server load."

That's great but much of the time when I notice the sluggishness my developers are offline (we're in different time zones). I'm wondering if there's a fairly easy way to track this when they're not online so we can say "Yup, last night at 10 PM your time when you noticed that it was job ABC." There has to be something that allows you to do this right?

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Variable Filenames By Date In Cron Jobs

Mar 12, 2008

How do you insert variables in cron jobs? e.g. the current date.

Let's say I want to back up a file and append the date to it.

0 0 * * * cp /some/file.txt /some/outputfile_[DATE].txt >/dev/null
(note that I'm not sure the cp will actually work like that, it's just an example)

Where outputfile_[DATE].txt has the date in it.

Are there variables cron can use for date, hour, minute, etc.?

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Check What Cron Jobs Have Been Added On The Server?

Feb 21, 2008

i find on the certain time,

the mysql of server will run a lot of query,

and the io and load will become very high,

after the time point,

all the io and load with be smoth,

so,i wonder if any Cron job has been add (by certain account) to run something,

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SSH Cron Job

Feb 28, 2007

I wanna run this command "./" Every 4 Hours can someone tell me what command I can use via SSH to set this cronjob?

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Cron Job

Oct 4, 2008

PHP Code:

* */1 * * *

But I didnt understand the difference from

PHP Code:

* * * * *

time property? Why is there a need for /1?

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Sep 17, 2007

I have root access to a server. Is it possible to create a cron that would restart my ftp and http server every so often. Like once a week or somthing. If so how would i do it?

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Cron Job

Feb 24, 2007

in order to backup db automatically i want to use cron job. So i set cron job at 00 AM

suppose that : my infos
db name : db
db user : zode
db pass : 123

the command i use is following

PHP Code:

mysqldump -u zode -p123 of -K -c -f --compatible=mysql40 --default-character-set=utf8 db > backup/db_`date +%d%m%y`.sql 

in good time i am looking into backup directory db is in it or not

but there is nothing in it

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Cron Job

Jun 18, 2007

I run A Centos 4.xx latest kernel server and Ive got a problem with Cron Job reporting.

The Cron Jobs themselves are working fine but I keep getting this message, on the hour, every hour


Originally Posted by Email from the Cron Daemon

Not a directory: /etc/cron.hourly

The folder etc/cron.hourly DOES EXIST! and I cannot work out what could be causing this?

Does anyone hgave any ideas what could be causing it

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CRON Job Timing Out

Sep 19, 2007

i have had a problem for some time now, regarding my CRON jobs. I am trying to download a large amount of data from ebay (through their API, totally legal and aboveboard) using php, but my CRONjob times out.

I have tried resetting the timeout variable, but then it exceeds the maximum filesize
SO, my question: is there any way to have a script run as a CRON job, and wen it is complete, call another script?

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Reboot Cron Job

Aug 20, 2007

VPS isn't rebooting by itself when it goes down. Anyone has any program/script that monitors heartbeat of the server? Like when it goes down, the program will automatically reboots the system. I know there's such a script out there but I forgot what it called.

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Cron Job Every Month

Jul 12, 2007

I want to execute the following command on the 15th of every month at 1AM:

echo > /usr/local/apache/logs/error_log

How to accomplish this?

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