Linux Basics (15) File access Control List

When you need to set permissions on a file for a particular user, the traditional chmod operation may not meet our needs, and you can use FACL (file access control system) to set additional permissions on a user for a file. There are two commands associated with this, Serfacl,getfacl.

1.setfacl set permissions.

Usage:

Setfacl-m u:username:perm File ... Set permissions for users

Setfacl-m g:groupname:perm File ... Set permissions for a group

Example:

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Setfacl-x u:username File ...

Setfacl-x g:groupname File ...

Cancels additional permissions on a file that a user or group adds.

Example:

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2.getfacl file

View a list of access permissions for a file

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Linux Basics (15) File access Control List