Update several machines

As the release date of the new Ubuntu is approaching, it’s time to revise how to update several machines without downloading the packages on each machine. There is a simple solution for this:

• Upgrade the first machine normally.
• Then copy the .deb packages from /var/cache/apt/archives to the other machine.

Careful, don’t run apt-get clean on the first machine before copying the packages because clean will delete these files. Of course, after copying the .deb files you can run the clean command.