File permissions

File permissions

UNIX is the operating system used at stud.ntnu.no, and it is easy to protect your files from unauthorized access by altering the file permissions. By doing so you can prohibit others from reading, writing or searching your files. But you have to set these permissions by yourself.

Home directory

New home directories are by standard set so that no one other than the owner can read and write to it. There are no technical reasons to keep them open. The web directory is located on a dedicated disk that is automatically viewable for everyone (but you may of course change permission on files and folders here too as you see fit).

Files that are created are automatically set to be readable/writable for the owner. You can change this if you desire. More info concerning file permissions on the home directory.

Web directory

The web directory is located on its own machine, viewable for everyone. The files you store on this drive will by default get the same file permissions as the files you create in your home directory, for most people this means you have to change file permissions on web pages after they have been created.

You can read more about how to set permissions on web pages and web folders here

Group directories

Some courses have their own group directory. This directory is only readable/writable for the group and the owner. If you use it with Unix, the files you create will automatically get the same read and write permissions as your other files, and they will automatically be assigned to the correct group (the group in the subject you are participating in).

By typing 'umask -S ug=rwx,o=' (without the quotes)
when you begin working with the group's files, they will also be writable to the members of the group
Remember to write 'umask -S u=rwx,go=' ((without the quotes)
before you work with private files again.

Using Windows you can map \\sambastud.stud.ntnu.no\groups\groupname All rights will be set automatically.