UNIX for Dummies Questions & Answers

Hi All,

How can I add few existing groups into a group?

eg. Currently, I have
- projgrp1 for proj1 with members proj1usr1, proj1usr2, proj1usr3..proj1usr10
- projgrp2 for proj2 with members proj2usr1, proj2usr2
- projgrp3 for proj3 wiht members proj3usr1, proj3usr3

Now, I would like to give access for all users in projgrp1 and projgrp2 to folderA.

I am thinking of adding projgrp1 and projgrp2 to a mainprojgrp and set folderA's group permission to the mainprojgrp. But I don't know how to do this.
Or is there any alternative way? Please advise.

Thanks & Regards,
tifmils

I'm pretty sure you can't have groups be members of a group. You'd have to create the mainprjgrp and make sure the members of the two sub groups are also members of the main group. Then assign perms to the main group.

What OS are you on? There may be specific OS based things that can be done. In other words, I don't know every UNIX. If you're on SCO and it lets you have groups be members of a group then someone who's smart on SCO could provide a better answer.

Carl

Hi Carl, Thanks for your suggestion. I'm using Solaris 9.

Actually, I have more than 20 of subgroup for different projects and about 6 - 10 users in each subgroup. 5 subgroups will be excluded from accessing the folder. Still, I need to add many users to main group. I'm trying to avoid this. Also, more project will come in near future.

Is there any other way to block some groups from accessing the folder? I know there is a command 'setfacl', but this only control the access on file.

-> tifmils

The only way I know is in NIS (yp) system .
there is an option to define netgroup

sam