jdownloader [JDOWNLOADER_OPTIONS] jdownloader -u jdownloader --help
JDownloader is open source, platform independent and written completely in Java. It simplifies downloading files from One-Click-Hosters like Rapidshare.com or Megaupload.com - not only for users with a premium account but also for users who don’t pay. It offers downloading in multiple parallel streams, captcha recognition, automatic file extraction and much more. Additionally, many "link encryption" sites are supported - so you just paste the "encrypted" links and JDownloader does the rest. JDownloader can import CCF, RSDF and DLC files.
This scripts downloads and launches JDownloader.
Launch the JDownloader updater instead of JDownloader itself.
Run jdownloader --help to get a list of the JDownloader command line options.
The directory to use for storing the JDownloader updater and program. When unset, ~/.jdownloader will be used.