Consider i have 3 VirtualBox installed Ubuntu OS's . What i want to do now is to transfer the updates and new application installs to the 2 other Virtual-box installed OS's . so that i can save time for updating them .
Thank you .
I'd suggest the following...
Shutdown all 3 VMs
For each of the 2 VMs to be updated:
The VM to be updated should detect that the .deb file is already 'downloaded' to the cache and simply use it to upgrade. New packages will need to be installed but should also not need to be downloaded again.