Re: Optimizing use of /var/cache/apt/archives/ by Synaptic &/or apt-get

[Richard Owlett <rowlett@cloud85.net>]

On 01/24/2019 07:51 AM, Dan Purgert wrote:
> Richard Owlett wrote:
> > On 01/23/2019 08:53 AM, Pascal Hambourg wrote:
> > > Le 23/01/2019 à 15:43, Richard Owlett a écrit :
> > > > 1. If /var/cache/apt/archives/ has the same or later version version
> > > > of a package, will Synaptic and apt-get automatically use contents of
> > > > /var/cache/apt/archives/ in preference to downloading whatever is at
> > > > location specified by sources.list?
> > >
> > > Same version : yes. Later version : no.
> > >
> > > > 2. If there is no internet connection at the moment, will Synaptic and
> > > > apt-get  use the latest version in /var/cache/apt/archives/ ?
> > >
> > > apt-get uses a version in the cache if and only if it matches the
> > > requested version, regardless of the internet connectivity.
> > >
> > > 1) apt decides which version of a package it wants.
> > > 2) If that package version is present in the cache, it uses it.
> > > 3) Otherwise, it selects a mirror and downloads it from there.
> >
> > I may have some re-thinking to do. Due to bandwidth I avoid downloads
> > whenever possible. Instead I purchase DVD sets. That's no real problem
> > for the machine whose purpose resembles a typical user's.
> >
> > I have a couple of machines set aside for experimentation. The
> > explicitly have no connectivity to the outside world. My mental image
> > resembled using the cache contents as an local pseudo-repository. I may
> > have to create a real one.
>
> Set up a rig as your own mirror and set those machines' sources.list to
> that mirror?

Essentially ;/