Re: [LUG] File permissions and access rights

[kevin bailey <kev.bailey@xxxxxxxxxxx>]

hi there,

check out umask

this command sets which permissions are set on newly created files

#umask 002
means that any new files created will have the permissions you want - 
i.e. rw rw r

by default it is usually 022 which gives rw r r on new files.


to make it permanent put it into your  ~/.bash_profile file - and to 
apply to all users it should go into the global .bash_rc[?] file which i 
think is in /etc/ somewhere.

BTW - i think its better practice to create a new group for each user 
with the same name as the user - this is then set as their primary group 
- i can't remember why - but it i think it is to do with system accounts 
or something.


Rick Timmis wrote:

> Hello all
>
> Can anyone help me with a little problem on permissions.
>
> I have a group of users, who I put in a group called staff. Each users 
> has staff set as their primary group.
>
> I want all members of staff to have RWX permission for all files in 
> the directory /work
>
> I have set the GID bit on /work and applied this change through the 
> directory so work and its sub contents have the following permission
>
> users RWX
> group RWX and GID bit set
> other R-X
>
> The directorty is owned by root
> and assigned to group staff
>
> so far each users can do exactly as i intended with existing files in 
> the folder. e.g staff 1 writes to file X then the permissions remain 
> unchanged. However when staff 1 creates a new file it becomes readonly 
> to all the other members of the group staff.
>
> Reading through the manual helped me resolve an incorrect primary 
> group setting but i am at a loss as to how to make new files created 
> by group members from being read only to the others.
>
> Newly created files have the following persmissions
>
> user RW
> group R
> others R
>
> Owner <userid>
> Group users

because the GID bit is set on the directory then all files created in 
that directory will have the same GID as the directory - this is why all 
the new files have 'users' as the group - which i presume is the 
intended action.

HTH,

kev

> Any offers ??
>
> Thanks RIck
>
>
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