[off-topic] apt and do-release-upgrade question - what's sources.list.distUpgrade for?

[Ralf Mardorf]

On Mon, 2020-07-20 at 12:57 +0200, Ralf Mardorf wrote:
> On Mon, 2020-07-20 at 12:43 +0200, Liam Proven wrote:
> > COPY CONFIG.SYS *.BAK
> > 
> > EDLIN CONFIG.SYS
> > 
> > 
> > 
> > (This is an example of the sort of handy wildcard usage that is legal
> > 
> > in the DOS/NT shells, but illegal in the *nix shell, which is why
> > 
> > after >30 years, I _still_ prefer the Windows command line.)
> 
> [rocketmouse at archlinux conf]$ /bin/ls
> CONFIG.SYS
> [rocketmouse at archlinux conf]$ cp CONFIG.SYS{,.BAK}
> [rocketmouse at archlinux conf]$ /bin/ls
> CONFIG.SYS  CONFIG.SYS.BAK
> 
> This is an example of the sort of handy bashism usage that is legal in bash.

Not to mention that an editor could be configured to automatically
backup the edited file before saving the new content.