How to install Drush via PEAR on a cPanel Server
Install PEAR
The first thing that you need to do is make sure that PEAR is running
pear version
If PEAR is not installed it can be easily added via EasyApache Update via WHM in the Exhaustive Options List, check the box and recompile to add in PEAR to your server.
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Once you have PEAR installed, you need to get the PEAR user config file set up - go to your cPanel GUI interface and click on PHP PEAR Packages you will see a config-set screen display 'suceeded'
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Now on the command line go to your home directory and see your PEAR config
cd
ls -la .pea*
-rw-r--r-- 1 letit letit 527 Dec 15 01:05 .pearrc
Link PEAR to the drush channel to download the package
pear channel-discover pear.drush.org
Output should be:
Adding Channel "pear.drush.org" succeeded
Discovery of channel "pear.drush.org" succeeded
Install drush
pear install drush/drush
Upgrading drush
For future upgrades just run
pear upgrade drush
For drush commands type drush and see what is available - otherwise check the drush website and a starting point for basic drush commands here.