message: bash syntax change
diff: @@ -130,7 +130,7 @@ do_pylint() {
  echo "check whether pylint is available or not."
  echo ""
  ${PYLINT_BIN} --version
  - if [ $? -eq 0 ]
  + if [[ $? -eq 0 ]]
  then
  echo ""
  echo "pylint available, proceeding with pylint sanity check."
  