MKDIR(1) — UNIX Programmer’s Manual
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
DIAGNOSTICS
Mkdir returns exit code 0 if all directories were successfully made. Otherwise it prints a diagnostic and returns nonzero.
7th Edition