发行说明：GitHub - aria2/aria2 at release-1.36.0
帮助文档：Aria2 Manual --- aria2 1.36.0 documentation
下载源码：
git clone https://github.com/aria2/aria2.git
安装依赖：
sudo apt install libssl-dev libgcrypt-dev libexpat1-dev libssh2-1-dev libc-ares-dev libc-ares-dev zlib1g-dev libsqlite3-dev pkg-config libxml2-dev libcppunit-dev autoconf automake autotools-dev autopoint libtool
1.生成configure文件
autoreconf -i
2."./configure"
3.make && make check
4.安装（需要sudo,否则报permission denied）
sudo make install
下载：-x 参数指定5个线程,-max-connection-per-server``=<NUM>,默认是1
aria2c https://nchc.dl.sourceforge.net/project/mx-linux/Final/Xfce/MX-23_386.iso -x 5