[shaz]

Ah sorted!! I was executing it in Putty from the wrong place.

(note: my /next-sdk folder is located in my public_html)

For others:
1.Log into putty as root
2. navigate to the public html folder (command shows root@skc [home/yourpath/public_html] #)
3. Type in the following to execute ./next-sdk/devkit/macros/create-module.php --module=MyName\\SidebarMenu

and it worked! yay!