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Learn about special file permissions in Linux to have granular control over file and directory access by users.

As a Linux novice user, you learn about the permissions and ownership associated with the file and directories. Linux/Unix-like operating systems allow you to set a combination of nine bits permissions to prevent other users from unnecessary files/directory access. Similar to these are special permissions for executable files known as set UID, set GID, and sticky bits.

Understanding special permissions can be a bit overwhelming for aspiring Linux administrators. Here you'll learn a little background on the regular file permissions and explains how they differ from special permissions. We also demonstrate SetID, GetID, and sticky bits functionality with examples for a comprehensive understanding.