vi /root/trackers-list-aria2.sh 内容如下：
#!/bin/bash
/usr/sbin/service aria2 stop
list=`wget -qO- https://raw.githubusercontent.com/ngosang/trackerslist/master/trackers_all.txt|awk NF|sed ":a;N;s/\n/,/g;ta"`
if [ -z "`grep "bt-tracker" /root/.aria2/aria2.conf`" ]; then
sed -i ‘$a bt-tracker=‘${list} /root/.aria2/aria2.conf
echo add......
else
sed -i "s@bt-tracker.*@bt-tracker=$list@g" /root/.aria2/aria2.conf
echo update......
fi
#授权脚本 chmod +x /root/trackers-list-aria2.sh
原文：https://www.cnblogs.com/yangjig/p/10023388.html