For WSL2: Fixes "Connection Refused" issue when accessing Windows localhost services. Run with "sudo sh wsl2-ubuntu-map-win-localhost.sh" !!! Remember to backup "/etc/hosts" just in case !!!

wsl2-ubuntu-map-win-localhost.sh

nameserver=$(grep -m 1 nameserver /etc/resolv.conf | awk '{print $2}')   # find nameserver
[ -n "$nameserver" ] || "unable to find nameserver" || exit 1            # exit immediately if nameserver was not found
echo "##### nameserver found: '$nameserver'"
localhost_entry=$(grep -v "127.0.0.1" /etc/hosts | grep "\slocalhost$")  # find localhost entry excluding 127.0.0.1
if [ -n "$localhost_entry" ]; then                                       # if localhost entry was found
    echo "##### localhost entry found: '$localhost_entry'"
    sed -i "s/$localhost_entry/$nameserver localhost/g" /etc/hosts       # then update localhost entry with the new $nameserver
else                                                                     # else if entry was not found
    echo "##### localhost entry not found"
    echo "$nameserver localhost" >> /etc/hosts                           # then append $nameserver mapping to localhost
fi
cat /etc/hosts                                                           # display to confirm

Thanks, it helps me a lot!

My pleasure 😃

Nice work, would be nice if it also adds the following to the /etc/wsl.conf file to prevent the host changes being overwritten everytime it boots up
`[network]

generateHosts = false`

Thank you!
After 2 hours searching for the solution I found it here!

Thank you ! It helps me a lot~!!!~~!

Should I download the file or how do I run it?

@Anthel you can create a file with the script like this

> nano mapscript.sh

Paste the script press ctrl+x and y

> chmod +x mapscript.sh
>./mapscript.sh

thank you, saved an hour researching on how to map wsl2 to windows localhost

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