CODEWITHSUNDEEP
gradlegroovyandroid-gradle-plugin
Pavan
Pavan

Reputation: 721

Run gradle task and save its return value to shell script variable

Is there a way to run a gradle task and save it output to shell variable ?

For example lets consider a gradle task that prints module version :

task getVersion << {
    println '2.2.0'
}

I run this task in the shell like this :

$./gradlew getVersion

Is it possible to save output of gradle task getVersion into shell variable. For example:

VERSION=`./gradlew getVersion`
echo "Module Version is $VERSION"

Upvotes: 11

Views: 10431

Answers (3)

Ramin Gharib
Ramin Gharib

Reputation: 65

If you are using the Kotlin DSL to write the task, you can do it without printing the newline. In your build.gradle.kts:

tasks.register("getVersion") {
    doLast {
        print(project.version)
    }
}

And then you can execute from your terminal:

VERSION=$(./gradlew -q getVersion)

Upvotes: 1

Entreco
Entreco

Reputation: 12900

In bash, you can do it like this: 

VERSION=$(./gradlew -q getVersion | tail -n 1)

-q : set gradle output to quit

| tail -n 1 : only use the last line of the output in your variable. Might not need this part, but sometime gradle outputs warnings/errors before printing the actual output. I personally experienced this while upgrading to gradle4.1. After the upgrade it also showed Configuration 'compile' in project ':app' is deprecated. Use 'implementation' instead.

Upvotes: 26

Marcelo Luiz Onhate
Marcelo Luiz Onhate

Reputation: 521

try this

exec {
    commandLine "./gradlew getVersion"
    standardOutput = output
}
VERSION =  output.toString().trim()

Upvotes: -1

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