I want to share a folder /documents over to two groups i.e. 'male' & 'female'.

'male' already have an access to /share1, /share2 & should also be able to access /documents folders.
'female' group should also have an access to /documents, & are already able to access /share3 & /share4 folders.

What i want is that male & female group should be able to read & write to /documents folder & it contents & files should be always be accessible by all the members of 'male' & 'female' group. No matter what the situation is.

What shall i do ?
My Query is basically how can i assign two groups to have rw access & files in result should always be accessible to all the members of these two groups.

I am already using setgid for this folder but how come its gonna cater two groups ??

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Only way out which i seems ok is to create a new GROUP with name of documents-users & place all the needful male & female in this group.
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Thanks
..amit..

The UNIX approch is to create a new group, place both "male" and "female" members it, and give the new group access to the directory.

Note that a user may be a mamber of as many groups as is needed. For example: is what my group membership looks like right now.

Edit: As far as I know, there's no command for creating group trees, although it wouldn't be very hard to do so in bash.

Ok.

I tried implementing it.

I created three new groups male, female & gender.
I edited /etc/group & /etc/gshadow & made male & female the member of group gender.

my /etc/group looks like this now.
gender:x:554:male,female

I've created two users male1 & female1.
male1's primary group is male.
female1's primary group is female.

Now i have created a new directory at root with the name of /commonshare & chown it to root:gender.

But when i did chmod /commonshare to 2770, male1 & female1 cannot cd to this directory.

So either i need to chmod it to 2777 for them to enter this directory but in that case any user can modify the contents & move into this directory.

Your comments.

Sorry. The point I was trying to make with the comment in my edit was that you can't do what you want by putting groups in other groups. (I.e., there is no tree group support.)

So, you have to put male1 and female1 (i.e., the users) into the gender group. (You don't need to change their primary group membership, just add them to the group.)

I already mentioned that in my first post..

With this i need to create a new group for every share with such a scenario.

Is there no other way out ?

Thanks
..amit..

bump.....

Please dont mind, bumping my thread in expectations for some replies.