snippetbashTip

umask — Manage the read/write/execute permissions that are masked out (i.e. restricted) for newly created fi

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the umask command: Manage the read/write/execute permissions that are masked out (i.e. restricted) for newly created files by the user. More information: <https://www.gnu.org/software/bash/manual/bash.html#index-umask>.

Solution

umask — Manage the read/write/execute permissions that are masked out (i.e. restricted) for newly created files by the user. More information: <https://www.gnu.org/software/bash/manual/bash.html#index-umask>.

Display the current mask in octal notation:

umask

Display the current mask in symbolic (human-readable) mode:

umask -S

Change the mask symbolically to allow read permission for all users (the rest of the mask bits are unchanged):

umask {{a+r}}

Set the mask (using octal) to restrict no permissions for the file's owner, and restrict all permissions for everyone else:

umask {{077}}

Code Snippets

Display the current mask in octal notation

umask

Display the current mask in symbolic (human-readable) mode

umask -S

Change the mask symbolically to allow read permission for all users (the rest of the mask bits are unchanged)

umask {{a+r}}

Set the mask (using octal) to restrict no permissions for the file's owner, and restrict all permissions for everyone else

umask {{077}}

Context

tldr-pages: common/umask

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