How to use the umask command: 2-Minute Linux Tips

The video tutorial explains the UMASK command, which sets default file permissions. It highlights that UMASK acts as a mask, meaning settings are the opposite of what might be expected. For instance, setting UMASK to 777 results in no permissions for files. Conversely, setting it to 000 grants read and write permissions but not execute. The tutorial also notes that UMASK changes do not affect existing files and that the current UMASK can be checked by typing 'umask'. Additionally, it discusses the relationship between UMASK and chmod, particularly the sticky bit.

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