Hi - This is probably a silly question to those that understand, but i'm trying to get my head wrapped around how source installations work exactly on a linux system.
For example, let's say I install zend optimizer via source v 1.23
under the directory /folder/zend
It writes to some config files, such as php, when it installs.
Then lets say later I install a new version of zend optimizer v1.50 under another directory /folder/zend2
Does it automatically overwrite the system files (php etc) so that the old version is not referenced anywhere - and I can safely delete the original /folder/zend?
Or do you have to uninstall the original version first somehow?
Also another related question - if I install something manually via source like zend optimizer, and it makes adjustments to the system files, and then I usea package manager like yum to update php - will zend continue to work or do you have to reinstall it (does yum break connections to anything you installed manually?)
Thanks very much linux gurus