Standard Linux permissions have some serious limitations such as files and directories can only belong to one user and one group. Permissions can only be set for the user, group or everyone else. Access Control Lists remedy this situation by providing a user to add permissions to as many users and groups as necessary.
- [Narrator] There are limitations…to the Standard Linux Permissions system.…Files and directories can only belong to one user.…Files and directories can only belong to one group.…Permissions for other are not concise,…meaning that we don't know who other is.…It could be Bob, it could be Ted.…Inheritance only supports group ownership.…There's no easy way to back up and restore permissions.…There's also no easy way…to temporarily restrict permissions.…An example of the limitations…of Standard Linux Permissions would be a directory…where the accounting group needs read, write,…and execute permissions.…
In addition, the marketing group would need read…and execute permissions.…The closest we can get to satisfying this objective is…to make the accounting group to group owner…and set their permissions to rwx.…Since a directory can only be owned by one group,…we would have no other choice…but to have the marketing group access…the directory using other permissions.…The problem is that everyone would be able…to access the directory,…
- Define file Access Control Lists.
- Describe what extended globs add to Linux pattern matching.
- State why file system recovery tools are so important for Linux users.
- Recall what execute permissions on a directory allows.
- Cite the maximum allowed default permissions on a file in Linux.
- List some of the advantages of ACLs over standard Unix permissions.
Skill Level Intermediate
Linux: Desktops and Remote Accesswith Grant McWilliams1h 44m Intermediate
1. Linux Files
2. Manipulate Files
3. Standard Unix Permissions
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