android - How to generate the gradlew -

i trying figure out, how build apk-s using shell. came on gradlew script, should work me. yet, miss file in directory, have windows gradlew.bat file, doesn't fit purposes. read have add in build.gradle file.

task wrapper(type: wrapper) { gradleversion = '2.0' } 

yet, still don't know if task should placed project build file or module build file(tried out both - didn't help). tipps appreciated.

simply run via command line:

gradle wrapper 

also, gradle 2.4 latest release , 2.5 should out soon. might want do:

task wrapper(type: wrapper) {     gradleversion = '2.4' } 

or

gradle wrapper --gradle-version 2.4 

please read docs here: https://docs.gradle.org/current/userguide/gradle_wrapper.html