1、下载方式

cd ap/downloads
wget https://gstreamer.freedesktop.org/src/gstreamer/gstreamer-1.14.4.tar.xz
wget https://dbus.freedesktop.org/releases/dbus/dbus-1.8.20.tar.gz
wget https://download.gnome.org/sources/glib/2.44/glib-2.44.1.tar.xz
wget https://distfiles.macports.org/expat/expat-2.1.0.tar.gz

2、文件校验

cd ap/downloads
sha256sum  -c files.sig