Aria2C是一个不错的下载软件，而且可以在后台长期运行。它的配置文件通常在用户目录~/.aria2/aria2.conf中。

我的某个机器上的配置如下：

dir=/home/lxm/tmp
input-file=/home/lxm/.aria2/aria2.session
save-session-interval=30
save-session=/home/lxm/.aria2/aria2.session
continue=true
max-concurrent-downloads=5
max-connection-per-server=5
min-split-size=10M
split=5
max-download-limit=0
enable-rpc=true
rpc-allow-origin-all=true
rpc-listen-all=true
rpc-listen-port=6800
follow-torrent=true
enable-dht=true
seed-ratio=1.0
bt-save-metadata=true
bt-tracker=udp://tracker.coppersurfer.tk:6969/announce,udp://tracker.leechers-paradise.org:6969/announce,udp://tracker.opentrackr.org:1337/announce,udp://p4p.arenabg.com:1337/announce,udp://9.rarbg.to:2710/announce,udp://9.rarbg.me:2710/announce,udp://tracker.internetwarriors.net:1337/announce,udp://exodus.desync.com:6969/announce,udp://tracker.tiny-vps.com:6969/announce,udp://retracker.lanta-net.ru:2710/announce,udp://open.demonii.si:1337/announce,udp://tracker.torrent.eu.org:451/announce,udp://tracker.moeking.me:6969/announce,udp://tracker.cyberia.is:6969/announce,udp://open.stealth.si:80/announce,udp://denis.stalker.upeer.me:6969/announce,udp://tracker3.itzmx.com:6961/announce,udp://ipv4.tracker.harry.lu:80/announce,udp://explodie.org:6969/announce,http://explodie.org:6969/announce,udp://valakas.rollo.dnsabr.com:2710/announce,udp://tracker.nyaa.uk:6969/announce,udp://retracker.netbynet.ru:2710/announce,udp://opentor.org:2710/announce,udp://zephir.monocul.us:6969/announce,udp://xxxtor.com:2710/announce,udp://tracker.zum.bi:6969/announce,udp://tracker.yoshi210.com:6969/announce,udp://tracker.uw0.xyz:6969/announce,udp://tracker.sbsub.com:2710/announce,udp://tracker.lelux.fi:6969/announce,udp://tracker.iamhansen.xyz:2000/announce,udp://tracker-udp.gbitt.info:80/announce,udp://retracker.sevstar.net:2710/announce,udp://retracker.akado-ural.ru:80/announce,udp://qg.lorzl.gq:2710/announce,udp://open.nyap2p.com:6969/announce,udp://bt2.archive.org:6969/announce,udp://bt1.archive.org:6969/announce,udp://bt.okmp3.ru:2710/announce,https://tracker.nanoha.org:443/announce,http://tracker.opentrackr.org:1337/announce,http://tracker.bt4g.com:2095/announce,http://t.nyaatracker.com:80/announce,http://retracker.sevstar.net:2710/announce,http://h4.trakx.nibba.trade:80/announce,udp://tracker4.itzmx.com:2710/announce,udp://tracker2.itzmx.com:6961/announce,udp://tracker.zerobytes.xyz:1337/announce,udp://tracker.swateam.org.uk:2710/announce,udp://tracker.dler.org:6969/announce,udp://tr.bangumi.moe:6969/announce,udp://opentracker.i2p.rocks:6969/announce,udp://chihaya.toss.li:9696/announce,udp://bt2.54new.com:8080/announce,https://tracker.opentracker.se:443/announce,https://tracker.lelux.fi:443/announce,https://tracker.gbitt.info:443/announce,http://www.loushao.net:8080/announce,http://vps02.net.orel.ru:80/announce,http://tracker4.itzmx.com:2710/announce,http://tracker3.itzmx.com:6961/announce,http://tracker2.itzmx.com:6961/announce,http://tracker1.itzmx.com:8080/announce,http://tracker.zerobytes.xyz:1337/announce,http://tracker.yoshi210.com:6969/announce,http://tracker.torrentyorg.pl:80/announce,http://tracker.nyap2p.com:8080/announce,http://tracker.lelux.fi:80/announce,http://tracker.internetwarriors.net:1337/announce,http://tracker.gbitt.info:80/announce,http://pow7.com:80/announce,http://opentracker.i2p.rocks:6969/announce,http://open.acgtracker.com:1096/announce,http://open.acgnxtracker.com:80/announce,http://mail2.zelenaya.net:80/announce

不懂的可以自行搜索。

Q.E.D.