#!/bin/bash for D in `find . -type d` do echo $D mkdir $D/01_January mkdir $D/02_February mkdir $D/03_March mkdir $D/04_April mkdir $D/05_May mkdir $D/06_June mkdir $D/07_July mkdir $D/08_August mkdir $D/09_September mkdir $D/10_October mkdir $D/11_November mkdir $D/12_December done