The umask command displays or sets the creation mask setting.
The creation mask setting defines the default attributes for new
files (see chmod). If no argument is
included, umask displays the current setting. To change
the creation mask setting type
where value is a three digit octal number similar to the
one defined in the chmod section. It is important
to note that this is a mask. This means that a umask setting of
022 would give the owner full privileges while the group and
all others would not have write privileges. This is the complement
of what we saw with chmod.
© 1993-1998 Christopher C. Taylor