move-wsl

#!/bin/bash

cleanup() {
    # Remove temporary file
    echo "Cleaning up ..."
    rm -f "$TEMP_FILE"
}

# Allow old and new way
if [ $# -eq 2 ]; then
    WSL_NAME=$1
    WSL_TARGET=$2
else
    # Select distro
    WSL_DISTROS=($(wsl -l -q | iconv -f UTF-16LE -t UTF-8 | sed "s/\r\n/\n/g"))
    PS3="Select distro to move: "
    select WSL_NAME in ${WSL_DISTROS[@]}; do
        if [ 1 -le "$REPLY" ] && [ "$REPLY" -le ${#WSL_DISTROS[@]} ];
        then
            break;
        else
            echo "Wrong selection: Select any number from 1-${#WSL_DISTROS[@]}"
        fi
    done

    read -p "Enter WSL target directory: " WSL_TARGET
fi



# Safety check
echo
read -p "Move WSL '$WSL_NAME' to $WSL_TARGET? (Y|n) " -n 1 PROMPT
echo

if [ "$PROMPT" != 'Y' ]; then
    exit 1;
fi

TEMP_FILE="$WSL_TARGET/$WSL_NAME.tar"

# Create target dir if non existent
if [ ! -d "$WSL_TARGET" ]; then
    echo "Creating target dir \"$WSL_TARGET\" ..."
    mkdir -p $WSL_TARGET
fi

# Export WSL image to tar file
echo "Exporting VHDX to \"$TEMP_FILE\" ..."
wsl --export $WSL_NAME $TEMP_FILE

if [ $? -ne 0 ] || [ ! -f $TEMP_FILE ]; then
    echo "ERROR: Export failed"
    cleanup
    exit 2
fi

# Unregister WSL so we can register it again at new location
echo "Unregistering WSL ..."
wsl --unregister $WSL_NAME &>/dev/null

# Importing WSL at new location
echo "Importing \"$WSL_NAME\" at \"$WSL_TARGET\" ..."
wsl --import $WSL_NAME $WSL_TARGET $TEMP_FILE

# Validate everything went well
if [ -z $(wsl --list | iconv -f UTF-16LE -t UTF-8 | grep -E "(^|\s)$WSL_NAME($|\s)") ]; then
    echo "ERROR: Import failed. Distro not found. Export file at $TEMP_FILE"
    exit 3
fi

if [ ! -f "$WSL_TARGET/ext4.vhdx" ]; then
    echo "ERROR: Import failed. Target file not found. Export file at $TEMP_FILE"
    exit 4
fi

cleanup

echo "Done!"