Linux Commands: Users file creation mask


umask-Linux Command

umask command- Users file creation mask

Syntax: umask [-p] [-S] [mode]

Description: User file creation permissions mask. Limit the default file attributes for a particular user. All files created by that user take on the attributes specified by umask. The (octal) value passed to umask defines the file permissions disabled. For example, umask 022 ensures that new files will have at most 755 permissions (777 NAND 022). Of course, the user may later change the attributes of particular files with chmod. The usual practice is to set the value of umask in /etc/profile and/or ~/.bash_profile (see Appendix G).

Example:

Related: export, chmod, chown, readonly

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