
Unix Code - Change Access Permissions
Files and folders can be made to react a certain way depending on who is trying to access them:
chmod mode file1 file2 ...
chmod -R mode dir (use this to change all file modes within a directory)
Mode Set
u user (owner)
g group
o other
+ add permission
- remove permission
r read
w write
x execute
Of course this is done much easier using an FTP program. For an example of that see here: Source 6