win10 linux子系统DNS修复

一行代码搞定

 /mnt/c/Windows/system32/ipconfig.exe /all | grep --color=auto "DNS Servers" | cut -d ":" -f 2 | grep --color=auto -e '^ [0-9]' | sed 's/^/nameserver/'| sudo tee /etc/resolv.conf > /dev/null