lazy update

tree.sh

@@ -0,0 +1,47 @@
+#!/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