What is umask command for

by
BudiKusasi
from LinuxQuestions.org on (#5R3JP)
What actually is umask command for in *nix OS?
How is its working mechanism and usefulness ? e.g
Code:$ umask 022Thanks muchlatest?d=yIl2AUoC8zA latest?i=EGVS2y_ZhBE:2hxOSTdFiOk:F7zBnMy latest?i=EGVS2y_ZhBE:2hxOSTdFiOk:V_sGLiP latest?d=qj6IDK7rITs latest?i=EGVS2y_ZhBE:2hxOSTdFiOk:gIN9vFwEGVS2y_ZhBE
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