I created a folder on the command line as the root user. Now I want to edit it and its contents in GUI mode. How do I change the permissions on it to allow me to do this?
If I understand you correctly, fire up a terminal, navigate to one level above that directory, change to root and issue the command:
chown -R user:group directory/
This changes the ownership of
directory/ (and everything else within it) to the user
user and the group
group. Many systems add a group named after each user automatically, so you may want:
chown -R user:user directory/
After this, you can edit the tree under
directory/ and even change the permissions of
directory/ and any file/directory under it, from the GUI.
If you truly want any user to have full permissions on all files under
directory/ (which may be OK if this is your personal computer, but is definitely not recommended for multi-user environments), you can issue this:
chmod -R a+rwX directory/