[Gllug] File permissions and umask on Ubuntu (and I think probably, Debian)

[Anthony Newman]

John Winters wrote:
> If you know a way of achieving this kind of file sharing without setting 
> umasks to 0002 then I'd love to hear it.  Asking users to keep changing 
> their umasks depending on what kind of work they're doing is *not* 
> feasible.

It appears that your only problem is non-propagation of group writable 
bits to subdirectories of your sharable root because of the default (and 
clearly sensible) system umask.

A disgusting but quite feasible hack is to periodically run a 
`/usr/bin/find /path/to/shared -type d -exec chmod g+w {} \;` to enable 
group members other than the file creator to alter the directory and its 
contents. Anything else would seem to be a bit of a corruption of the 
whole UNIX permissions philosophy :)


Ant
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