Is it possible to change file status (from read only to read and write) for multiple files/folders at once? I moved all my web files/folders from my default MAMP directory to a more manageable location. Now all the files and folders have been changed to read only. 

I figured out how to change the status per one by one, but that would take a lot of time. Is there a way to change all the files and folders to "read and write" all at once
Open terminal and try the following; putting the path of your new directory behind the /:

chmod -R o+rw /path/to/your/new/directory


-R means recursively change the permissions of all files in the directory, with the arguments ( o+rw ):

o ( the other users), alternatively u (for user) or g (for group)
r ( read )
w ( write )