contextural pwd - shows at most the grandparent of the current directory

cpwd

#!/bin/bash

nicepwd=`pwd | sed "s|$HOME|~|"`;

# count the number of slashes in pwd
slashes=`pwd | perl -pe 's/[^\/]//g' | wc -m`

if [ $slashes -le 2 ]; then
  echo "$nicepwd";
else
  # using a delimiter of / from the ${slashes}th field keep the remain to end of pwd then trim leading / if it exists
  pwd | cut -f $slashes- -d / -s | perl -pe 's/^\///g'
fi