FTPClient test. Download All Things!

bookScript.groovy

@Grab(group='commons-net', module='commons-net', version='2.0')

import org.apache.commons.net.ftp.FTPClient
import org.apache.commons.net.ftp.FTPFile

new FTPClient().with {
        connect '61.135.158.199'
        println replyString
        enterLocalPassiveMode()
        login('anonymous', '')
        println replyString
        changeWorkingDirectory('pub')
        changeWorkingDirectory('books')
        listFiles().each { file ->
                if (file.type == FTPFile.FILE_TYPE) {
                        println "FILE: ${file.name}"
                        def incomingFile = new File(file.name)
                        incomingFile.withOutputStream { ostream ->
                                retrieveFile file.name, ostream
                        }
                }
        }
        println "Me voy"
        disconnect()
}