On Wed, 29 Jan 2020 19:56:49 -0800
Ben Koenig <[email protected]> dijo:

>Just out of curiosity, do you actually put anything in /usr that you
>need to back up?  Since this is ubuntu, pretty much everything in that
>folder is created by installed packages, there's no real need to back
>it up since everything can be reinstalled from the repository. The
>benefits of backing up /usr usually don't outweigh the risks, unless
>you are manually installing software or using it for other purposes.

You put your finger on it. I have a dozen active PPAs for installing
things, and dozens more packages that were installed by downloading the
program from outside the repositories, including quite a few that had
to be installed from source.

>Nothing will complain about backing up /usr, however if in the future
>you attempt to restore your OS using a backed up copy of those files
>it could seriously break your install. You just end up using a huge
>amount of disk space without any benefit or gain.

Well, I just did that. I moved my Xubuntu 18.04 from my old laptop to
this new one, and the process included cloning / and /home to the new
drive. It booted fine after I fixed a problem that systemd caused when
it revised which disk was /dev/sdb. I also had to fix a few other
things, but all my programs launched without a problem.

I do take to heart what you say; restoring / from a backup can easily
be a problem. But I have plenty of disk space, and /usr is only about
9G. That's about 1/3 of a 4K movie.
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