I understand that there is a way to do alias in your 'Bukkit.yml' and in the essentials 'Custom Text' but I dont have the 'Custom Text' in essentials folder so I am unable to use alias and no other plugins seem to be supporter/working anymore, any help would be great.
Simple aliases is good plugin to make aliases there is in-game commands to make aliases for multiple commands or single commands. http://dev.bukkit.org/bukkit-plugins/xsimplealias/