Normally, the web server or service installed on your server can use one configuration file management. Each service has a configuration file with a different path. If you do not remember where configuration files stored so where you must go to. Fortunately, Linux has a tool to help you easily find the file path that you are searching for.
For example, to search for the PHP configuration file, named php.ini , you would use the following command:
find / -name php.ini
For / which is the directory path you want to find (I used to use the root directory), the file name php.ini
Locate command has the same effect on more servers but not at all can use and you should give it a try:
Allot of time mlocate is not installed so locate will not work. So do this!
yum install mlocate
then run "updatedb" You should run this commanded to updated mlocate database. If you do not do this you may not be able to find the file you are looking for even if it is actually there. The reason this happens is the location of the file has not been updated in mlocates database.