Transmission是一种BitTorrent客户端，
安装：
sudo apt-get install transmission-daemon给用户授权：sudo usermod -a -G pi debian-transmission
设置Transmission的配置文件：sudo vim /etc/transmission-daemon/settings.json
{
"alt-speed-down": 15,
"alt-speed-enabled": false,
"alt-speed-time-begin": 540,
"alt-speed-time-day": 127,
"alt-speed-time-enabled": false,
"alt-speed-time-end": 1020,
"alt-speed-up": 15,
"bind-address-ipv4": "0.0.0.0",
"bind-address-ipv6": "::",
"blocklist-enabled": true,
"blocklist-url": "http://list.iblocklist.com/?list=ydxerpxkpcfqjaybcssw&fileformat=p2p&archiveformat=gz",#可以不修改
"cache-size-mb": 4,
"dht-enabled": true,
"download-dir": "/home/pi/Downloads",#修改
"download-limit": 100,
"download-limit-enabled": 0,
"download-queue-enabled": true,
"download-queue-size": 5,
"encryption": 1,
"idle-seeding-limit": 30,
"idle-seeding-limit-enabled": false,
"incomplete-dir": "/home/pi/Downloads",#修改
"incomplete-dir-enabled": true,
"lpd-enabled": false,
"max-peers-global": 200,
"message-level": 2,
"peer-congestion-algorithm": "",
"peer-id-ttl-hours": 6,
"peer-limit-global": 240,
"peer-limit-per-torrent": 50,
"peer-port": 51413,
"peer-port-random-high": 65535,
"peer-port-random-low": 49152,
"peer-port-random-on-start": false,
"peer-socket-tos": "default",
"pex-enabled": true,
"port-forwarding-enabled": true,
"preallocation": 1,
"prefetch-enabled": 1,
"queue-stalled-enabled": true,
"queue-stalled-minutes": 30,
"ratio-limit": 2,
"ratio-limit-enabled": false,
"rename-partial-files": true,
"rpc-authentication-required": true,
"rpc-bind-address": "0.0.0.0",
"rpc-enabled": true,
"rpc-password": "raspberry",#修改
"rpc-port": 9091,
"rpc-url": "/transmission/",
"rpc-username": "transmission",#修改
"rpc-whitelist": "127.0.0.1",
"rpc-whitelist-enabled": false,#修改
"scrape-paused-torrents-enabled": true,
"script-torrent-done-enabled": false,
"script-torrent-done-filename": "",
"seed-queue-enabled": false,
"seed-queue-size": 10,
"speed-limit-down": 100,
"speed-limit-down-enabled": false,
"speed-limit-up": 100,
"speed-limit-up-enabled": false,
"start-added-torrents": true,
"trash-original-torrent-files": true,
"umask": 0,
"upload-limit": 100,
"upload-limit-enabled": 0,
"upload-slots-per-torrent": 14,
"utp-enabled": true#修改
}
- 设置下载目录为用户目录下的Downloads文件夹：
"download-dir": "/home/pi/Downloads",
- 设置未下载完成数据存放地点为Downloads文件夹：
"incomplete-dir": "/home/pi/Downloads",
- 设置Web登陆密码为：raspberry
"rpc-password": "raspberry",
- 设置Web登陆用户名：transmission
"rpc-username": "transmission",
- 允许Web登陆：（设置为true）
"utp-enabled": true
设置完成之后，保存setting.json文件，重新启动transmission服务：
sudo service transmission-daemon reload
到这里可以在浏览器中输入你的树莓派的ip地址和端口号访问transmission的web界面了，比如你的树莓派地址是：192.168.1.10，那么在浏览器中输入：
192.168.1.10:9091
登陆的用户名和密码使用配置文件中设置的内容，例子中的用户名是：transmission，密码是：raspberry。
如果遇到permission问题，按照文中的下载地址，使用以下命令提升Downloads目录的权限：
sudo chmod 777 -R /home/pi/Downloads/
关于 transmission 配置的详细信息请参考：EditConfigFiles。
修改 transmission 用户名和密码的方法：
1.先停止服务： sudo service transmission-daemon stop
2.修改配置文件，下面两项分别是用户和密码，你看到这个是加密的密码，没关系直接把密码改为你想要的密码明文就可以：
- “rpc-username”: “transmission”,
- “rpc-password”: “{2dc2c41724aab07ccc301e97f56360cb35f8ba1fGVVrdHDX”,
3.再此启动服务 ：sudo service transmission-daemon start 。启动的时候 transmission 会自动把新密码加密。
另外，transmission 默认监听 51413 端口，最好在路由器上做个端口转发，把这个端口转到它的 IP 地址。
