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Cron Commands


I've been reading through tutorials for setting up cron commands via cPanel, but everything I have tried does not work. What I need to do is simple - I just want to run a php file on my server once every 15 minutes.


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MAILTO="USER"
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total 60
drwxr-xr-x 2 root root 4096 Dec 17 03:07 .
drwx--x--x 94 root root 12288 Jan 3 09:28 ..
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-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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/etc/cron.hourly/modsecparse.pl:
install_driver(mysql) failed: Can't load '/usr/lib/perl5/site_perl/5.8.8/i686-linux/auto/DBD/mysql/mysql.so' for module DBD::mysql: libmysqlclient.so.14: cannot open shared object file: No such file or directory at /usr/lib/perl5/5.8.8/i686-linux/XSLoader.pm line 70.
at /usr/lib/perl5/site_perl/5.8.8/i686-linux/DBD/mysql.pm line 14
Compilation failed in require at (eval 4) line 3.
Perhaps a required shared library or dll isn't installed where expected
at /etc/cron.hourly/modsecparse.pl line 19

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i need to backup database,that not that much huge a small database,now iam useing cpanel server so iam takeing via phpmyadmin manually,now i need to set cron to take backup at every 12hours and save it on specified path,

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I would like to have MySQLDUMP dump my specified database(s) into a specified folder using date and time stamps in the filename.

I've done some searching on this but haven't really came up with a way to do all of this at once, or if I may need to setup a cron job to rename the file after the dump has completed. I may be going about this all wrong to begin with, I'm just looking for a very simple and reliable way to backup my databases.

I'm testing this on a Shared Web Host account at this time which does have SSH shell access, but I wasn't sure if this makes a difference.

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My webshosts don't offer CRONJOB's as standard. If I want to add it my hosting goes from £19.99 per annum to £89.99 would you believe!

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Increasing my costs by 75% a year isn't feasable...

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I want to keep the command but do not want to remove them..

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I recently purchased a new dedicated server, since I have had this server (8 days) I have being receiving the following email:

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Cron - Not Working - Apache
I did not realize the significance of the Apache sub-forum. I thought perhaps this would be a more general Server management query, but I realize now I should have posted in Apache forum.

I have been banging my head against the wall for the last couple of days trying to get cron jobs working. It's actually making me quite depressed, a lot of people are waiting on me to get this working, and for the life of me I see no light. I'm not a stupid person, i'm a PHP developer, and have some linux skills. This is the single most annoying issue I have had to deal with simply because I cannot find any troubleshooting methods to my issue.

I have tried every different combination of command under the sun and I cannot get any sign that the cron is running the commands.

I own a "virtual" dedicated server with a hosting company, I have full root access. Linux / Apache

The script file is a PHP file which simply mail() an email saying that cron is working, I am yet to receive this mail that was executed by cron.

I have ensured there are no errors in this simple PHP file, I have executed the script from the shell and all is well there..

So, firstly I tried to setup the cron table from CPanel, on the account where the script resides.

I used the following command combinations:
Code:
0-59 * * * * /usr/local/bin/php /home/username/public_html/cron.php
0-59 * * * * php -q /home/username/public_html/cron.php
0-59 * * * * php /home/username/public_html/cron.php
0-59 * * * * cd "/home/username/public_html/"; php cron.php
0-59 * * * * wget [url]
with time combinations of:
* * * * *
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All these commands work fine when executed through the shell.

I set the mail address for cron output to be my mail address also.

I do not get any mail from cpanel with an overview of the cron executions.

I then gave up trying to get cron to work on that account, and decided to go root.

I logged into the shell via root, checked the cron table for root. I edited the root cron table (that contains commands for various cpanel scripts etc) to include a command to execute the php script, even with the script residing on the root directory.

I also added MAILTO="myemail@email.com" to the first line of the cron table.

I do not get any emails of the cron actions.

How can I check if the cron scheduler is working when I get no sign that the cron commands are being executed, and when I do not receive any cron emails? What methods are there for me to troubleshoot this issue?

Could it be possible that cron shedular is not active on my server?

I have lurked the net with great detail to find any method to troubleshoot my issue, and all the related pages I find are to do with troubleshooting the commands. I know my commands are fine, there is some other issue here.

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