What is `umask` in Linux?

Q: What is `umask` in Linux?

> * **Definition**: A default permission mask that controls the permissions automatically assigned to newly created files and directories. * **Mechanism**: Subtracts permissions from the default system limits (which are `666` for files and `777` for directories). * **Goal**: Enforces baseline secure access control for new assets dynamically without manual user intervention.

💬Answer

Definition: A default permission mask that controls the permissions automatically assigned to newly created files and directories.
Mechanism: Subtracts permissions from the default system limits (which are 666 for files and 777 for directories).
Goal: Enforces baseline secure access control for new assets dynamically without manual user intervention.

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