How to set environment variable for SUMO_HOME (sumo-0.32.0) in Ubuntu 16.04 LTS

Question

After installing sumo-0.32.0 on Ubuntu 16.04 LTS, I noticed that SUMO folder doesn't contain a bin directory!

The SUMO folder I checked is in the path: /usr/share/sumo Is this the right sumo home directory, and how to set its environment variable step by step?

I installed sumo as indicated by its web page using the following three commands:

sudo add-apt-repository ppa:sumo/stable 
sudo apt-get update 
sudo apt-get install sumo sumo-tools sumo-doc

See also What is the difference between env, setenv, export and when to use?, Convention personal environment variables, How to permanently set environmental variables — Sergiy Kolodyazhnyy, Jun 11 '18 at 19:56
» "Warning: Environment variable SUMO_HOME is not set, using built in type maps" « : A warning is not an error, a waning is just "informational text". .... Did you install ´sumo´ ? → cd sumo-0.32.0/ && sudo make install ... or are you using sumo from the build location ? — Knud Larsen, Jun 11 '18 at 20:45
I installed sumo as indicated by its web page using the following commands: " sudo add-apt-repository ppa:sumo/stable sudo apt-get update sudo apt-get install sumo sumo-tools sumo-doc " — Ahmedou Jreivine, Jun 12 '18 at 20:16
I installed sumo as indicated by its web page using the following three commands: { sudo add-apt-repository ppa:sumo/stable sudo apt-get update sudo apt-get install sumo sumo-tools sumo-doc } And when I got the warning, I tried to set the var permanently and appended this path: /usr/share/sumo the file etc/environment, but the same warning persist! I noticed that the SUMO folder in this path doesn't contain a bin folder and contains tools folder only! — Ahmedou Jreivine, Jun 12 '18 at 20:37
Have you reloaded /etc/environment after editing (reboot or re-login)? I think the environment variable, if needed by the application, should be set while installing SUMO using APT automatically, consider contacting the developers of the SUMO package. — Melebius, Jun 13 '18 at 07:51

How to set environment variable for SUMO_HOME (sumo-0.32.0) in Ubuntu 16.04 LTS

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