Why kscript is awesome

systemProcess.kts

import java.io.File

/** Executes a shell-command and returns the result */
fun String.exe(dir: File? = null): String {
    val process = ProcessBuilder("/bin/sh", "-c", this)
        .redirectErrorStream(true)
        .directory(dir)
        .start()
    val exitCode = process.waitFor()
    if(exitCode != 0) {
        println("Execution of command '$this' failed with ExitCode '$exitCode'")
        System.exit(exitCode)
    }
    return process.inputStream.bufferedReader().use { it.readText() }
}