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6.205 UMASK — Set the file creation mask

Description:
Sets the file creation mask to MASK and returns the old value in argument OLD if it is supplied. See umask(2).
Standard:
GNU extension
Class:
Subroutine
Syntax:
CALL UMASK(MASK [, OLD])
Arguments:

MASK Shall be a scalar of type INTEGER(*).
MASK (Optional) Shall be a scalar of type INTEGER(*).