scripts/pathdown.sh

   1 #!/bin/sh
   2 UP=
   3 DN=${PWD:?}
   4 TP=${TOPDIR:?}
   5
   6 while [ ! $TP/$UP/. -ef $DN ] ;do
   7         UP=`basename $PWD`/$UP
   8         cd ..
   9         if [ "$PWD" = "/" ]; then echo "Lost"; exit 1; fi
  10 done
  11
  12 echo $UP
  13 exit 0