Learn Gradle

Command	Meaning
GRADLE_OPTS	Gradle builds use the value of this environment variable (and also use JAVA_OPTS)
gradle -q <command>	-q switch disable the JVM info
gradle -q tasks --all	List all available tasks for the project
gradle init	Initialize a Gradle project (simply create the build.gradle file)
gradle wrapper	Download the wrapper and create the necessary folders for it
gradle properties	Print the project properties (for example root, build folder)
gradle dependencies	Print the project dependencies
gradle projects	Print sub-projects
gradle --status	Status of Gradle daemon
gradle --stop	Stop all Gradle daemon
gradle -x test	Skip tests
gradle -m or gradle --dry-run	Print which task will be running but not executing them
gradle --profile	Prints the execution time to an HTML table

task helloWorld{
    println 'Hello World!'
}

task greet(group : "Dummies", description : "Greet the user.", dependsOn: helloWorld){
	println "Hi again!"
}

It can run by gradle helloWorld or simply gradle hello or gradle hW (if the task can be uniquely identified by name ) jar tvf /build/libs/app.jar

~/.gradle/wrapper/dists