[root@server0 tmp]# setfacl -m u:natasha:rw fstab

[root@server0 tmp]# setfacl -m u:harry:- fstab

[root@server0 tmp]# setfacl -m o:r fstab

[root@server0 tmp]# getfacl /var/tmp/fstab

getfacl: Removing leading '/' from absolute path names

# file: var/tmp/fstab

# owner: root

# group: root

user::rw-

user:natasha:rw-

user:harry:---

group::r--

mask::rw-

other::r--