ls -l
In the above example this command would list each of the files in the current directory and the files permissions, the size of the file, date of the last modification, and the file name or directory.
ls -R
Includes the contents of subdirectories.
ls -A
Shows you all files, even files that are hidden (these files begin with a dot.)
chmod -R 755 mydirectory
Changes permissions on a php directory to the traditional setting.
or for read write
chmod 776 $directory_to_change
