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I need to reinstall GRASS 6.4 on this Ubuntu computer due to compatibility issues. I had installed GRASS 6.4 a few weeks ago to work with a simulation program. I used the command

apt-get install grass

as explained at the website https://grass.osgeo.org/download/software/linux/. Later I installed GRASS 7.1 to try to start making compatibility changes to the simulation. After doing this, the simulation no longer worked. I decided to try uninstalling all GRASS and reinstalling GRASS 6.4.

However, when I use the same command at the terminal, it only installs GRASS 7.0. I tried using a repository for GRASS 6, but that installed GRASS 7.1.

What is the simplest method I can use to reinstall GRASS 6.4?

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1 Answer 1

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First, to completely remove grass 7 you have to use:

sudo apt-get purge grass

or

sudo apt-get remove --purge grass

Afterward, you need to eliminate this repository of your /etc/apt/sources.list because it is the source of GRASS GIS 7.0 (stable):

ppa:ubuntugis/ubuntugis-unstable

and then:

sudo apt-get update
sudo apt-get install grass

to install the old grass 6.4

I hope that it helps.

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  • This worked. There were some leftover GRASS 7 components after using the "purge grass" command, so I used Synaptic to delete those. Then, I followed the rest of the directions. GRASS 6.4 was installed correctly, and the simulation program is working again! Thank you for your help.
    – Will
    Commented Dec 14, 2015 at 19:09

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