Transmission

 http://1000umbrellas.com/2010/10/04/updated-transmission-installationconfiguration-on-ubuntu-server

sudo apt-get install transmission-daemon

sudo mkdir -p /srv/transmission/downloading
sudo mkdir -p /srv/transmission/seeding
sudo mkdir -p /srv/transmission/watch
sudo mkdir -p /srv/transmission/complete
sudo usermod -a -G debian-transmission chris
sudo chown -R debian-transmission:debian-transmission /srv/transmission

sudo chmod 775 /srv/transmission/*
   
cd /etc/transmission-daemon
sudo cp -p settings.json settings.json.ori
sudo vi settings.json

{
    "alt-speed-down": 500,
    "alt-speed-enabled": false,
    "alt-speed-time-begin": 480,
    "alt-speed-time-day": 127,
    "alt-speed-time-enabled": false,
    "alt-speed-time-end": 0,
    "alt-speed-up": 10,
    "bind-address-ipv4": "0.0.0.0",
    "bind-address-ipv6": "::",
    "blocklist-enabled": false,
    "blocklist-url": "http://www.example.com/blocklist",
    "cache-size-mb": 4,
    "dht-enabled": true,
    "download-dir": "/srv/transmission/seeding",
    "download-limit": 100,
    "download-limit-enabled": 0,
    "encryption": 2,
    "idle-seeding-limit": 30,
    "idle-seeding-limit-enabled": false,
    "incomplete-dir": "/srv/transmission/downloading",
    "incomplete-dir-enabled": true,
    "lazy-bitfield-enabled": true,
    "lpd-enabled": false,
    "max-peers-global": 200,
    "message-level": 2,
    "open-file-limit": 32,
    "peer-congestion-algorithm": "",
    "peer-limit-global": 240,
    "peer-limit-per-torrent": 60,
    "peer-port": 44435,
    "peer-port-random-high": 20599,
    "peer-port-random-low": 20500,
    "peer-port-random-on-start": false,
    "peer-socket-tos": "default",
    "pex-enabled": true,
    "port-forwarding-enabled": false,
    "preallocation": 1,
    "prefetch-enabled": 1,
    "proxy": "",
    "proxy-auth-enabled": false,
    "proxy-auth-password": "",
    "proxy-auth-username": "",
    "proxy-enabled": false,
    "proxy-port": 80,
    "proxy-type": 0,
    "ratio-limit": 0.2500,
    "ratio-limit-enabled": true,
    "rename-partial-files": true,
    "rpc-authentication-required": false,
    "rpc-bind-address": "0.0.0.0",
    "rpc-enabled": true,
    "rpc-password": "{344d5fb95fa67ba00ccb188d79809bee0957b674fAWT0o9G",
    "rpc-port": 9091,
    "rpc-url": "/transmission/",
    "rpc-username": "transmission",
    "rpc-whitelist": "127.0.0.1,192.168.88.*",
    "rpc-whitelist-enabled": true,
    "script-torrent-done-enabled": false,
    "script-torrent-done-filename": "",
    "speed-limit-down": 5120,
    "speed-limit-down-enabled": true,
    "speed-limit-up": 512,
    "speed-limit-up-enabled": true,
    "start-added-torrents": true,
    "trash-original-torrent-files": false,
    "umask": 2,
    "upload-limit": 100,
    "upload-limit-enabled": 0,
    "upload-slots-per-torrent": 4,
    "utp-enabled": true,
    "watch-dir": "/srv/transmission/watch",
    "watch-dir-enabled": true
}

$ sudo service transmission-daemon reload 

   $ sudo service transmission-daemon restart

transmission-daemon -p 9091 -f -T     

update to new version

sudo aptitude install software-properties-common
sudo add-apt-repository ppa:transmissionbt/ppa