script to update PATH and JAVA_HOME to JDK 8 (running on cygwin)

j8

#!/bin/bash

#
# usage:
#   . j8
#

JH8=$(echo $JAVA_HOME8 | sed 's/\\/\//g' | sed 's/C:/\/c/ig')
JH11=$(echo $JAVA_HOME11 | sed 's/\\/\//g' | sed 's/C:/\/c/ig')
JH8_bin="${JH8}/bin"
JH11_bin="${JH11}/bin"

UNPACKED_PATH=/tmp/$$.1

echo $PATH | sed "s/:/\n/g" > $UNPACKED_PATH

UPDATED_PATH=""
while read line
do

  TO_APPEND=""
	if [ "$line" = "$JH11_bin" ]
	then
	  TO_APPEND=$JH8_bin
	else
	  TO_APPEND=$line
	fi

  if [ "$UPDATED_PATH" = "" ]
  then
    UPDATED_PATH="$TO_APPEND"
  else
    UPDATED_PATH="$UPDATED_PATH:$TO_APPEND"
  fi

done < $UNPACKED_PATH


rm $UNPACKED_PATH

export PATH=$UPDATED_PATH
export JAVA_HOME=$JAVA_HOME8