Unix Version 7 - man page for mkdir (v7 section 1)

MKDIR(1)				       General Commands Manual					     MKDIR(1)

NAME
       mkdir  -  make a directory

SYNOPSIS
       mkdir dirname ...

DESCRIPTION
       Mkdir  creates  specified  directories in mode 777.  Standard entries, `.', for the directory itself, and `..'
       for its parent, are made automatically.

       Mkdir requires write permission in the parent directory.

SEE ALSO
       rm(1)

DIAGNOSTICS
       Mkdir returns exit code 0 if all directories were successfully made.  Otherwise it  prints  a  diagnostic  and
       returns nonzero.

													     MKDIR(1)