WSL(2) bash profile helpers

.zshrc

# WSL?
if [[ "$(< /proc/sys/kernel/osrelease)" == *microsoft* ]]; then
    export $(dbus-launch)
    export LIBGL_ALWAYS_INDIRECT=1
    export WSL_VERSION=$(wsl.exe -l -v | grep -a '[*]' | sed 's/[^0-9]*//g')   
    export WSL_HOST=$(tail -1 /etc/resolv.conf | cut -d' ' -f2)
    export DISPLAY=$WSL_HOST:0
    # pip path if using --user
    export PATH=$PATH:$HOME/.local/bin
    # SSH
    eval $(/mnt/c/weasel-pageant/weasel-pageant -r)
fi

if /etc/resolve.conf can't get what you want, iproute2 util is another proper way to get the gateway address:

 ip -o route get 1.1.1.1 | cut -d' ' -f 3

the 1.1.1.1 can be any address of foreign network, it just show how kernel visit that address.

export DISPLAY=$(ipconfig.exe | grep IPv4 | head -1 | rev | awk '{print $1}' | rev | tr -d '\r'):0.0

I used this approach but added a grep to extract just the Wi-Fi adapter because the IPv4 part was just fetching the first match so:

export DISPLAY=$(ipconfig.exe | grep -A 6 'Wireless LAN adapter Wi-Fi' | grep IPv4 | head -1 | rev | awk '{print $1}' | rev | tr -d '\r'):0.0

I came up with this: HOST_IP=$(route.exe print | grep "0.0.0.0 0.0.0.0" | awk '{print $4}')

I changed the routing inside my wsl as a workaround for my VPN software. So there is no way to get the Windows external IP on the linux side.