qmcpack/labs/lab1_qmc_statistics/tree.sh

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#!/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).
#
# 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 [ "$1" != "" ] #if parameter exists, use as base folder
then cd "$1"
fi
pwd
ls -R | grep ":$" | \
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