I have installed GRASS GIS following this install manual.
I have installed SAGA GIS following this install manual.
and finally I have installed QGIS 2.18.1 following the official details for install in Ubuntu Debian/Ubuntu.
The problem is I can't use algorithms from GRASS, SAGA and TAUDEM in the QGIS
interface.
I have toolbox processing plugin and I have configure the options providers for all software (SAGA, GRASS) and not working.
Only GDAL tools are working in the plugins and QGIS algorithms. Standalone out of QGIS, SAGA and GRASS GIS work fine.
How to configure QGIS to work like work in Windows?
System details QGIS 2.18.1 Ubuntu 16.04.
GRASS ERRORS:
TOOLBOX OPTIONS SETTINGS:
Finally I think so this is solution for my another question Why can't I use processing algorithms in a standalone PyQGIS script?
Best Answer
You have not to configure anything like you do in windows. After you have installed Qgis:
sudo add-apt-repository ppa:ubuntugis/ubuntugis-stable sudo apt-get update sudo apt-get install grass
and then use this simple workaround (see here):
sudo ln -s /usr/bin/grass72 /usr/bin/grass70
./configure make sudo make install
and it will work.
Remeber to activate GRASS7 and SAGA from Processing option settings.