Permissions and owners

The umask command

Defines which permissions are REMOVED from new files you create.

Syntax

umask [valor]Try it in the terminal →

Most useful options

022The usual: the others only read
077Only you: fully private

Copy-ready examples

$ umask 077Make it private
$ umask 022Back to usual

You can try them in the browser terminal: it does not touch your computer.

Typical mistakes

  • It does not change what already exists: only what you create from now on.

Related commands

chmodtouchmkdir

FAQ

Why is my new file rw-------?

Because your umask removes permissions from the group and others.

More Permissions and owners commands

chownchgrpsetfaclgetfaclchattrlsattrgetenforcesetenforceSee the category →

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