add mkdir

mkdir.1

@@ -0,0 +1,17 @@
+.TH MKDIR 1 sbase\-VERSION
+.SH NAME
+mkdir \- make directory
+.SH SYNOPSIS
+.B mkdir
+.RB [ \-p ]
+.RI [ name ...]
+.SH DESCRIPTION
+.B mkdir
+creates the specified directories.
+.SH OPTIONS
+.TP
+.B \-p
+creates any necessary parent directories, and does not fail if the target
+already exists.
+.SH SEE ALSO
+.IR mkdir (2)