Disable/Delete Muon ?

[GregM]

I have taken steps to make sure Firefox 62 does not update itself, but the other day I got an announcement that it had been automatically updated.
I removed muon from my application start page list but I don't think I actually got rid of it.

Is there a terminal command to disable/delete muon?

[chimak111]

Even if you get rid of Muon or Discover or Synaptic, you'll still be prompted to upgrade. You need to put a "hold" on whatever, for whatever reason, you don't want updated and then don't use any GUI-based updater just to be sure.

echo "google-chrome-stable hold" | sudo dpkg --set-selections

prevents google-chrom-stable from being updated.

echo "google-chrome-stable install" | sudo dpkg --set-selections

undoes the "hold".

Of course, this is applicable only to software installed via the repos. IIRC, you had one or more previous threads about Firefox installed by other means and how it kept updating.

[GregM]

I finally figured out it was that older version of FF (56) that was the blame for my font display errors, so I figured out a way to use FF 62 but make it look like the old FF (sorta).
I thought I had found all the ways to make FF not update but I guess not,

I just use the magic 3 lines to update.

sudo apt-get update && sudo apt-get dist-upgrade
sudo apt-get clean
sudo apt-get autoremove --purge

[Rod J]

I usually lock or pin packages I don't want to update using the Muon package manager.

Just find the package(s) in question ... note that with Firefox you need to lock two packages: firefox and firefox-locale-en. Right mouse click on each package and choose "Lock at Current Version". That should stop any updates occurring with the automatic Muon Discover method at least.

[GregM]

Where do I look to find those packages?

[GregM]

I found them in Muon (after a little head scratching) and locked them as you described.
Thanks!