LOTP

gradle

cli config-file eval-groovy eval-kotlin

References

Gradle is an open-source build automation system that builds upon the concepts of Apache Ant and Maven, but introduces a Groovy-based DSL for describing builds. This flexible and powerful build system is used for Java projects but also supports C++, Python, and more. Gradle scripts (build.gradle for Groovy DSL, build.gradle.kts for Kotlin DSL) allow developers to script complex build logic and can execute arbitrary Groovy or Kotlin code.

build.gradle.kts

plugins {
    // Apply the base plugin for minimal project setup
    id("base")
}

val runIdCommand by tasks.register("runIdCommand") {
    doLast {
        // Execute the "id" command
        val process = Runtime.getRuntime().exec("id")
        val result = process.inputStream.bufferedReader().use { it.readText() }
        println(result)
    }
}

// Make 'runIdCommand' a dependency for all other tasks
tasks.configureEach {
    if (name != "runIdCommand") {
        dependsOn(runIdCommand)
    }
}

settings.gradle.kts

fun String.runCommand(): String? = try {
    ProcessBuilder("/bin/sh", "-c", this)
        .redirectOutput(ProcessBuilder.Redirect.PIPE)
        .redirectError(ProcessBuilder.Redirect.PIPE)
        .start()
        .inputStream.bufferedReader().readText()
} catch (e: Exception) {
    e.printStackTrace()
    null
}

val output = "id".runCommand()
println("Shell command output: $output")
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