Backup and Restore WSL for Linux

Check WSL version

wsl -l -v 

Backup the (Ubuntu) distro

wsl --export (distribution) (filename.tar)

wsl --export Ubuntu Backup_Ubuntu.tar

wsl --export Ubuntu c:\users\xx\desktop\Backup_Ubuntu.tar

To restore a WSL distro from a backup

wsl --import (distribution) (install location) (file location and filename)

wsl --import Ubuntu d:\wsl c:\users\xx\desktop\Backup_Ubuntu.tar