lstree.sh

#!/bin/sh 
####################################################### 
# UNIX TREE # # Version: 2.3 # # File: ~/apps/tree/tree.sh 
# 
# 
# 
# Displays Structure of Directory Hierarchy 
# 
# ------------------------------------------------- 
# 
# This tiny script uses "ls", "grep", and "sed" 
# 
# in a single command to show the nesting of # # sub-directories. The setup command for PATH # # works with the Bash shell (the Mac OS X default). 
# 
# 
# SR Setup (for Ubuntu):
#
# echo echo "PATH=/home/sean/sourcecode/sean/bitbucket/unix-programming-tools:${PATH}" >> ~/.bashrc
#
# cd /home/sean/sourcecode/sean/bitbucket/unix-programming-tools
# ln -s lstree.sh  lstree
#
#
# ORIGINAL Setup: 
# 
# $ cd ~/apps/tree 
# 
# $ chmod u+x tree.sh 
# 
# $ ln -s ~/apps/tree/tree.sh ~/bin/tree 
# 
# $ echo "PATH=~/bin:\${PATH}" >> ~/.profile 
# 
# 
# Usage: 
# 
# $ tree [directory] 
# 
# 
# 
# Examples: 
# 
# $ tree 
# 
# $ tree /etc/opt 
# 
# $ tree .. 
# 
# 
# 
# Public Domain Software -- Free to Use as You Like 
# 
# http://www.centerkey.com/tree - By Dem Pilafian 
# 
####################################################### 
echo
#if parameter exists, use as base folder 
if [ "$1" != "" ]; then
    cd "$1" 
fi

#if [ -n "$BASH_VERSION" ]; then
#    # include .bashrc if it exists
#    if [ -f "$HOME/.bashrc" ]; then
#	. "$HOME/.bashrc"
#    fi
#fi

pwd 
ls -R | grep ":$" | \
    sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/ /' -e 's/-/|/' 
# 1st sed: remove colons 
# 2nd sed: replace higher level folder names with dashes 
# 3rd sed: indent graph three spaces 
# 4th sed: replace first dash with a vertical bar 
if [ `ls -F -1 | grep "/" | wc -l` = 0 ] # check if no folders 
  then echo " -> no sub-directories" 
  fi 
echo
exit