choose either the mvnw or the global installation

mvn-function.sh

# dynamically choose mvnw or global.
function mvn() {

  # Stop the search on this folder.
  # "/" is the highest possible, but you can go for $HOME for example
  STOP="/"

  # Location of Maven.
  # $MVN_HOME/bin/mvn is an option...
  MVN_CMD="/usr/local/bin/mvn"

  # ----------------------------------------------------------------------------
  # Don't edit below this line
  #
  DIR="$( pwd )"
  FILE="null"

  while [ $DIR != $STOP ]
  do
    if [ -e $DIR/mvnw ]
      then
        FILE="$DIR/mvnw"
        break
      else
        DIR="$( dirname "$DIR" )"
    fi
  done

  if [ $FILE != "null" ]
    then
      CMD=$FILE
    else
      CMD=$MVN_CMD
  fi

  # execute maven command with args
  echo "Calling $CMD $@"
  $CMD $@
}