1. Enter ssh username@mason.gmu.edu replacing username appropriately.
2. Enter your mason.gmu.edu password
3. mason> pico .cshrc
4. edit to reads umask 022 or umask 002 (If other people in your group edit the website, change your umask to 002; If only you edit your website, change it to 022)
5. Save the file (Ctrl+O) (letter O)
6. File Name to write: .cshrc will display towards the bottom of the window. Hit enter.
7. Exit the file (Ctrl+X).
8. Run pico .profile and pico .login and repeat Steps 3 and 4.
9. Log out and then log back in again.

Source: Fix Server Upload Permissions