Cross platform scripts (scala script)

universalScript.scala

def universalScript(shellCommands: String,
                    cmdCommands: String,
                    shebang: Boolean): String = {
  Seq(
    if (shebang) "#!/usr/bin/env sh" else "",
    "@ 2>/dev/null # 2>nul & echo off & goto BOF\r",
    ":",
    shellCommands.replaceAll("\r?\n", "\n"),
    "exit",
    Seq(
      "",
      ":BOF",
      cmdCommands.replaceAll("\r?\n", "\r\n"),
      "exit /B %errorlevel%",
      ""
    ).mkString("\r\n")
  ).filterNot(_.isEmpty).mkString("\n")
}