Ubuntu系统升级系统Unable to find expected entry 'main/binary-i386sudo/Packages'in...

在运行 sudo apt-get update命令时出先以下错误：

错误：

W:Failed to fetch http://mirrors.ustc.edu.cn/ubuntu/dists/trusty/Release Unable to find expected entry ‘main/binary-i386sudo/Packages’in Release file (Wrong sources.list entry or malformed file)

解决办法：

输入以下命令：

dpkg --print-foreign-architectures

i386

i386sudo

删除i386sudo问题就解决了

dpkg --remove-architecture i386sudo