20.10: Installing a .deb with dependencies -- HowTo?

[Robert Heller]

At Fri, 23 Apr 2021 21:56:16 +0200 "Ubuntu user technical support,? not for general discussions" <ubuntu-users at lists.ubuntu.com> wrote:

> 
> On Fri, 23 Apr 2021 15:01:42 -0400 (EDT), Robert Heller wrote:
> >With 18.04, doing 'sudo apt install whatever.deb' works (it
> >automagically handles the deps), but this fails with 20.10.
> 
> What output do you get?

It claims that the .deb file is not a package name.

> 
> Perhaps it's caused by a race condition?
> 
> Maybe you run "apt update" and perhaps just a second later,
> when you run "apt install /path/foo.deb", the mirror got updated, so
> your index files were out of sync again?

This was on a fresh install.  I  installed 20.10 in a VM so I could run a 
program that was only available as a deb that needed at least 20.10. 

> 
> Did you try running "apt update && apt install /path/foo.deb" a second
> time?

Didn't rerun apt update.

> 
> Sometimes the most unlikely issue happens. A few days back I tried to
> build a package in tmpfs. I got "No space left on device", but actually
> more than 2 GiB were available and the RAM wasn't broken. As it turned
> out, I run out of inodes. I didn't think of this unlikely pitfall,
> another user recommended to check the inodes.
> 

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