出错提示：
Get:1 http://211.162.127.1/files/3160000000353389/mirrors.163.com/debian xenial/main amd64 libxext-dev amd64 2:1.3.3-1 [82.1 kB]
Err:1 http://211.162.127.1/files/3160000000353389/mirrors.163.com/debian xenial/main amd64 libxext-dev amd64 2:1.3.3-1
Writing more data than expected (82816 > 82090)
E: Failed to fetch http://211.162.127.1/files/3160000000353389/mirrors.163.com/debian/pool/main/libx/libxext/libxext-dev_1.3.3-1_amd64.deb Writing more data than expected (82816 > 82090)
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Unable to locate package错误，等等。
解决：
1.sudo apt-get updata
2.sudo apt-get install XXX --fix-missing!