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1. Create required users & group.
# useradd tom
# groupadd salesgrp
# groupadd fingrp
# mkdir /salesdept
# useradd -g salesgrp Karen
# useradd -g salesgrp John
# useradd -G fingrp tom
# useradd -G fingrp meet
2. Add a file by using ‘cat’ command.
# cat > abc.txt
3. To apply acl’s on users & groups
# setfacl -m
4. To check acl list
# getfacl abc.txt
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