Re: Optimizing use of /var/cache/apt/archives/ by Synaptic &/or apt-get
- Date: Thu, 24 Jan 2019 07:25:46 -0600
- From: Richard Owlett <rowlett@xxxxxxxxxxx>
- Subject: Re: Optimizing use of /var/cache/apt/archives/ by Synaptic &/or apt-get
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.