How to set umask for a folder and it's subfolder?

Question

I'm working on the same directory with some friends and they access it via SSH.

I added us in the same group and defined a sticky bit to keep the user:group values the same.

But when a user create a file/folder, the Write attribute is not defined for the group, disabling other to write it/on it.

How can I define the Umask to add the Write value for groups in the specific directory and it's subfolders ?

I tried to find some help before, but I only saw helps for Fedora/CentOs, and I'm using Debian Squeeze.

Thanks for your help

Solution

I assume that you did already:

chmod g+rwxs directory

and now you have to make sure that the users have a umask like 002. To setup the umask for all the users, try in /etc/bashrc or /etc/profile.

caveat: you cannot setup a umask per directory as it's a process level thing.

Interesting read http://www.cyberciti.biz/tips/understanding-linux-unix-umask-value-usage.html

Comments

[Cyril N.]

Thanks for this help. Does it works when using ssh over git ?

[zekus]

tbh I am not sure but, because you are using a unix user anyway even with git, in theory it should work.

[Ryu_hayabusa]

umask 002 ~ chomd 775

[bricklore]

You actually can set a umask per directory using Linux ACLs, e.g. use setfacl -R -m group:groupname:rw-,d:group:groupname:rw- directory/ to force the r and w permission for the group "groupname" on a directory