Re: New file permissions

When set on directories, the setgid bit freezes group ownership and
permissions for all child directories and freezes group ownership for
all child files.

As root,
    chgrp users /shared
    chmod g+s /shared

This sets the group on "/shared" to "users" and forces all directories
and files subsequently created under "/shared" to have group "users".

Not too often understood or needed, but handy as heck when it is.

-mj-


Craig White wrote:

> On Thu, 2004-06-24 at 20:17, Alan Dayley wrote:
>
>>I have googled and checked the PLUG archive but I can't come up with the
>>right search terms to hit the answer to this problem.
>>
>>Let's say that one Linux computer is shared by two people. They take
>>turns logging in and all is well. However, they have created a directory
>>called /shared for sharing files between each other. UserA creates a
>>document or other file and saves it as /shared/file1. When UserB logs in
>>they want to edit /shared/file1. But the owner and group permissions on
>>/shared/file1 are set to UserA and UserB can't edit and save it.
>>
>>Both UserA and UserB are in the group Users. If /shared/file1 is set to
>>group Users, they now can both access it. But, as soon as one creates a
>>new file, like /shared/file2, it has the group set to the user who created
>>it!
>>
>>How does one set the permissions and ownership of the /shared directory
>>such that all files created there have the correct group always set no
>>matter which user is the owner?
>
> ----
> chmod g+s /shared
>
> Craig
>
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