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I am running 12.04 x64 server on ext4 disk. There are two user groups 'A' and 'B'. For a specific directory, I would like to give its all permissions to user group 'A'. Also I would like to give only 'write' permission to user group 'B'. A user of 'B' should only be allowed to write a file or create directory in the directory.

(Should not be allowed to open or read a file.)

I tried with acl as below but not worked well.

sudo setfacl -d -m g:GROUPB:-wx /mydirectory


The user of GROUPB could not entered 'mydirectory' because of permission denied error.

Does anyone know if it is possible?

Thank you!

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1 Answer 1

setfacl -m d:g:grpB:-wx /tmp/testgrp/ This works for me.

When grpA:userA creates a file under /tmp/testgrp/testA and

When grpB:userB tries to cat the file, it throws a message saying permission denied.

But the same user(grpB:UserB) tries to touch /tmp/testgrp/testB it creates a file named testB and grpA:UserA can do cat /tmp/testgrp/testB to display the file contents

Hope this helps

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