can't save changes to Makefile on Fedora 19

Question

So I'm installing NS2.35 on my Fedora 19

per this link - http://wpage.unina.it/marcello.caleffi/ns2/fedora.html

Now everything about this installation is going smoothly but I'm hitting a snag when it comes to cut/copy/paste/save as activities .

Specifically , when I tried to

1) copy a folder and paste it into another directory like in Windows it said permissions denied . However I found a command online that allowed me to extract to a destination directory instead of current so that's fine.

My problem presently is that after "step 4" in the link posted above , the author says I've to make changes to the "Makefile" - I have made the necessary changes but I'm not able to "save" the changed file .

The option is grayed out .

I'm new to Linux but I know that this step requires super user permission . I typed in "su" on the terminal and tried doing it but to no success .

Please help another n00b out .

Answer 1

Type su in terminal and type the root password. now open Makefile by using gedit Makefile in Terminal. now you can modify your Makefile. hope it helps