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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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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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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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.

SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/

# 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.

MAILTO="USER"
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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Jun 24, 2007

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

Looking up www.xxxx.com
www.xxxx.com
Making HTTP connection to www.xxxx.com
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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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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Dec 7, 2008

how to set cron jobs in window....

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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:

/home/abc/public_html/forum/class/sendnotice.php

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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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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Apr 11, 2009

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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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Jan 8, 2009

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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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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,

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May 3, 2007

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funny thing is, i can upload and download non Arabic file names through ftp, and ftp displays them correctly, but they can't be accessed through a webbrowser.....

hmmmm, actually firefox can access them, it screws up the file name into funny signs but actually displays the file, I.E can't access them at all....

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Here's the symptom: any attempt to create a directory or file name with a numeric name (digits only) fails. So:

touch 294 - fail
mkdir 399 - fail
touch x294 - ok
touch xydf - ok
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[url]
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Also, how to check assigned value as "show variables;" command omit this value.

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I figure someone out there has already done the research can might know an answer to the problem. The key here is flexibility- no point paying $90-300/month for a dedicated server the first month if we're only getting 200 listeners on our show and 50 for the other shows but if we somehow experience a surge in listeners we don't want to be stuck at a low cap.

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