Join Scott Simpson for an in-depth discussion in this video Access control lists (ACLs), part of Linux Foundation Cert Prep: Storage Management (Ubuntu).
- [Instructor] Standard Linux permissions…can be extended with ACLs or access control lists.…ACLs let us specify access to a file…for individual users and groups,…outside of the regular owner, group, others approach.…Say you had a user who needs read/write access…to a file that's owned by a group that they're not part of.…Since our user is not the owner of the file,…or a member of the group that owns the file,…and we don't want to open up read/write access to others,…what can we do?…With a file access control list,…we can explicitly say that our user…is granted permissions to the file.…
Let's take a look at this, at the command line.…I'll create a file here with the touch command.…I'll say touch a_file.…And I can look at the permissions for this file…with the getfacl command and the filename.…I can see that the owner and group are listed here,…as well as the user, group, and other permissions.…My regular user wouldn't have access to change this file.…I'll switch to that user with su scott.…
And I'll try to edit the file, nope, no write permission.…
Join instructor Scott Simpson, as he shows how to manage and optimize file storage on Ubuntu Linux. First, learn how to create, modify, and mount partitions and filesystems, and manage swap space. Scott then combines these basics into more sophisticated solutions using volume management, and shows how to secure Linux storage and configure disk quotas and backup policies.
- Creating and modifying partitions
- Creating, modifying, and mounting filesystems
- Mounting encrypted partitions
- Creating redundant storage with RAID
- Working with physical volumes, volume groups, and logical volumes
- Securing filesystems with ACLs
- Backing up data