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?