忽略 mirrors.oschina.net trusty InRelease E: GPG 错误：mirrors.oschina.net trusty InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)root@biyuzhe:~# sudo dedit /etc/apt/sources.listsudo：dedit: command not foundroot@biyuzhe:~# sudo gedit /etc/apt/sources.list去掉烦人的oschina
