[Qgis-user] QGIS installation on Ubuntu 18.04

[Andre Joost]

Am 26.09.19 um 14:43 schrieb J. M:
>  I still wouldn't know how to install a previous version, so it
> would be interesting to know how to do that...
>

You can have:

v3.8.3 the way you did (to be replaced by v3.10.0 soon)
v3.4.12 from https://qgis.org/ubuntu-ltr bionic main
v2.18.17 from the main Ubuntu repo (removing qgis.org from your sources)

But not several at the same time, unless you use virtual boxes for each.

HTH,
Andre Joost