Linux Command Cheat Sheet/Show or set default permission mask

Control default modes for new files and directories.

Section: Permissions Ownership and ACLs

Show or set default permission mask

bash
bash
umask 027
Explanation

A stricter umask helps keep new files from being world-readable.

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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Related commands

Same sheet · prioritizing Permissions Ownership and ACLs
List permissions
Show permissions and ownership on files.
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Change permissions with numeric mode
Set rwx permissions numerically.
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Change permissions recursively
Apply a mode to a directory tree.
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Show ACLs
Inspect Access Control Lists on a file or directory.
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Set ACL entries
Grant or modify fine-grained access rules.
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Change owner and group
Set file owner and group.
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