$ plex_download -s server ubuntu
ubuntu linux-ubuntu-x86_64 (1.2.6.2975-9394c87)
ubuntu linux-ubuntu-i686 (1.2.6.2975-9394c87)

$ plex_download server ubuntu linux-ubuntu-x86_64
plex_download: starting download...
plex_download: download complete

$ plex_download -h
usage: plex_download [-h] [-v] [-V] [-s] [-S] [-u USERNAME] [-p PASSWORD]
                     [-d DESTINATION]
                     [PLATFORM] [DISTRO] [BUILD]

Plex Version Downloader

positional arguments:
  PLATFORM              the platform of the version to download (possible
                        values: server, theater, player, player_embedded)
  DISTRO                the distro of the version to download
  BUILD                 the build of the version to download

optional arguments:
  -h, --help            show this help message and exit
  -v, --verbose         enable verbose output (use twice for more)
  -V, --version         print version information and exit
  -s, --show-versions   show server versions without downloading
  -S, --show-versions-only
                        show server versions without downloading and without
                        extra metadata
  -u USERNAME, --username USERNAME
                        set plex account username
  -p PASSWORD, --password PASSWORD
                        set plex account password
  -d DESTINATION, --destination DESTINATION
                        set download location

showing a list of the latest normal server versions:
  plex_download -s server

showing a list of the latest plex pass server versions:
  plex_download -s -u "AzureDiamond" -p "hunter2" server

downloading non plex pass server version:
  plex_download server ubuntu linux-ubuntu-x86_64

downloading plex pass server version:
  plex_download -u "AzureDiamond" -p "hunter2" server english windows-i386

downloading the latest server to a specific directory:
  plex_download -d ~/downloads server macosx darwin-x86_64

downloading the latest server to a specific path:
  plex_download -d ~/downloads/plex.deb server synology linux-synology-i686