A shell script which searches the current working directory and upward for Gradle gradlew wrapper script. Place the file on your path and make it executable.

gr

#!/bin/bash

set -u

FOUND=0
CURR_PATH="$PWD"
REAL_GRADLEW="$CURR_PATH/gradlew"
if [ -x "$REAL_GRADLEW" ]
then
  FOUND=1
else
  while [ "$CURR_PATH" != "/" ]
  do
    CURR_PATH=$(dirname "$CURR_PATH")
    REAL_GRADLEW="$CURR_PATH/gradlew"
    if [ -x "$REAL_GRADLEW" ]
    then
      FOUND=1
      break
    fi
  done
fi
if [ $FOUND -eq 1 ]
then
  $REAL_GRADLEW "$@"
else
  echo "Unable to find gradlew file upwards in filesystem"
fi
exit 0