There is a file in my
/opt/local/include folder on OSX that I wish to edit.
This is currently set to 'Read only'. So, to allow me to edit, I have selected
get info, then under
sharing and permissions I have added myself, and given me the privileges
Read and write. However, I now open the file and am still unable to save it.
What do I need to do to allow me to edit and save this file?