add erlang, more-complex shell examples

- some Erlang and escript files
 - .escript extension
 - .erlang extension
 - shell script with %, ##, name tokens

samples/Shell/99-bottles-of-beer.script!

@@ -0,0 +1,28 @@
+#!/bin/bash
+# Bourne Again shell version of 99 Bottles
+# Dave Plonka - plonka@carroll1.cc.edu
+
+typeset -i n=99
+typeset bottles=bottles
+typeset no
+
+while [ 0 != $[ n ] ]
+do
+   echo "${n?} ${bottles?} of beer on the wall,"
+   echo "${n?} ${bottles?} of beer,"
+   echo "take one down, pass it around,"
+   n=n-1
+   case ${n?} in
+   0)
+      no=no
+      bottles=${bottles%s}s
+      ;;
+   1)
+      bottles=${bottles%s}
+      ;;
+   esac
+   echo "${no:-${n}} ${bottles?} of beer on the wall."
+   echo
+done
+
+exit

samples/Shell/string-chopping.script!

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+name=foodforthought.jpg
+echo ${name##*fo}