当我尝试在 Ubuntu 13.04 中运行以下命令时:
sudo apt-get update
我收到以下错误:
W: Failed to fetch http://ppa.launchpad.net/upubuntu-
com/xampp/ubuntu/dists/raring/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used
instead