Shell

• shell.cd("rel or absolute path") << change the work directory. cd(env["scriptpath"]) gets you back
• shell.cd("rel or absolute path", function() { .... }) change the path; run function and return to the original path.
• **shell.exec(path, args, options) **

options:{
  environment: object -- override the local environment
  timeout: Integer -- seconds; Negative timeout means don't wait at all
  workdir: String -- Work dir (null = none)
  capture: boolean or function -- if true returns the output as a string; if a function it gets called for any output from the app.
}

• shell.execAsync(path, args, options): task -- same as exec; returns task; no capture support
• shell.system(command, workDir): string -- execute through cmdspec/shell
• shell.kill(task) -- Kill a process task.