My fresh Ubuntu install says I need some updates. Okay, but there are some problems.
First, it tells me to close the snap-store to update it, but the snap-store is not open.
1/
Okay, I'll try opening the snap-store to look for updates.
"This is getting out of hand! Now there are two of them!" -Nute Gunray
2/
Okay, let's try the gnome update.
It appears to be Schrödinger's update: available and not available at the same time.
3/
How about the snap-store update? Well, you can't update that while the snap-store is running.
Any ideas on how to install these updates?
/4
Maybe use Software Updater? Nope, it doesn't think there are updates.
Are there? If so, how do I apply them? If not, how do I remove the notifications from the list in the snap store?
/5
@peterdrake Hmm, all I can think of is to use the good old command line:
sudo apt update && sudo apt upgrade && sudo snap refresh
@JensHannemann That happily ran, but the snap store and the notifications under the clock both think I still have updates.
I assume the &&s in your command are short-circuited so the later parts run only if the first parts ... succeed? My only confusion here is that I would expect a process to return 0 (false) if it succeeded.
@peterdrake You are right. And yes, as counterintuitive as it is, in POSIX and may other systems, a non-zero return code indicates an error and a zero return code indicates success. That's why the traditional C hello world program ends with `return 0;`.
🇳🇱
Its actually very intuitive when you consider there is only one way for a thing to succeed where as there are many ways to fail :)
@JensHannemann @freemo Okay, but then how does the && work? Is it interpreting the 0 as true?
@peterdrake @freemo Yeah, pretty much. It's just one of those historical inconsistencies that have developed over time. I just keep my sanity by simply not thinking about it in terms of expression logic in this case.
@freemo @peterdrake True observation. I seem to remember a discussion way back, when people were suggesting positive exit codes for success and negative ones for failure, but that never caught on.