This howto helps to install SVN (subversion  ) on a cpanel server
Since Cpanel compiles httpd from source ; it is best we compile svn also from source and install the mod_dav_svn apache2 module along with it. Please note that you must have apache2.0 inoder for this to work
Step1 - mod_dav_svn requires mod_dav to be present.So [...]

Modifying the source code of cpanel control panel is prohibited by End User License Agreement (EULA)
So how would you implement some custom fucnctionality?
Cpanel provides something called hooks! for this purpose .Hooks are basically files that are checked and if present executed after some  internal cpanel process like account creation,termination etc
I would provide the example of [...]

The following guide (property of Cpanel.net ) is a good starting point in troubleshooting cpanel /whm problems
Please note that this document belongs to Cpanel.net and may contain proprietary informationr
Download a copy from here
http://gnusys.net/downloads/Troubleshooting.pdf

Consider the scenario :- SSH service in your server ( CPanel ) has falied and its not allowing you to login from backend. But you can login to WHM with any issues. Trying to restart SSH using WHM > Restart Services also is giving a “Failed” result .
or
You have changed the SSH port for server [...]

This bash script is very useful if you are planning to do cpanel account migrations purely from the commandline and automate the process of the migration . This scripts extracts the names of all reseller users in the server to the file
/opt/reseller_list
and correspondingly for all users in this list extract the cpanel usernames to the [...]