umask(2) System Calls Manual umask(2)
NAME
umask - set and get file creation mask
SYNOPSIS
DESCRIPTION
sets the process's file mode creation mask to cmask and returns the previous value of the mask. Only the file access permission bits of
the masks are used.
The bits set in cmask specify which permission bits to turn off in the mode of the created file, and should be specified using the symbolic
values defined in stat(5).
EXAMPLES
The following creates a file named in the current directory with permissions so that the file can be written only by its owner, and can be
read or executed only by the owner or processes with group permission, even though group write permission and all permissions for others
are passed in to
RETURN VALUE
The previous value of the file mode creation mask is returned.
SEE ALSO
mkdir(1), sh(1), mknod(1M), chmod(2), creat(2), mknod(2), open(2).
STANDARDS CONFORMANCE
umask(2)
