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Command: umask | Section: 2 | Source: UNIX v10 | File: umask.2
UMASK(2) System Calls Manual UMASK(2)
NAME
umask - set file creation mode mask
SYNOPSIS
int umask(complmode)
DESCRIPTION
Umask sets the process mode mask. The mask modifies the mode argument
of creat (see open(2)), mkdir(2), and mknod(2) thus:
mode &= (07777 & ~(complmode & 0777))
In other words, the mask specifies permission bits to be turned off
when files are created.
The previous value of the mask is returned by the call. The initial
value is set by login(8), and may be modified by the umask command of
sh(1). The mask is inherited by child processes.
SEE ALSO
open(2), mkdir(2), mknod(2), stat(2)
UMASK(2)