As things currently stand, all members of the marketing group have read/write access to all other group members' files. Restricting access to a file to only specific group members is the same two-step process that we've already covered.
First, Vicky sets the normal permissions to allow only her to access her file. Then, she'll set the ACL:
[vicky@localhost marketing]$ echo "This file is only for my good friend, Cleopatra." > vicky_file.txt [vicky@localhost marketing]$ chmod 600 vicky_file.txt [vicky@localhost marketing]$ setfacl -m u:cleopatra:r vicky_file.txt [vicky@localhost marketing]$ ls -l total 4 -rw-rw-r--. 1 charlie marketing 0 Nov 13 15:59 charlie_file.txt -rw-r-----+ 1 vicky marketing 49 Nov 13 16:24 vicky_file.txt [vicky@localhost marketing]$ getfacl vicky_file.txt # file: vicky_file.txt # owner: vicky # group: marketing user::rw- user:cleopatra:r-- group::--- mask::r-- other:...