[sumo-user] SUMO_HOME In Linux

[余星光 <yuxiaoyubaba@xxxxxxx>]

Recently I tried to run SUMO on Ubuntu System, and I failed to set the 'SUMO_HOME' environment variable.The figure below shows this error.

According to the link attched, I have tried two methods to solve it. However the problem still exists .https://sumo.dlr.de/wiki/Basics/Basic_Computer_Skills#Linux

1.Temporary solution

The red line shows the failed result.

2.Permannent solution

The part of circle in the figure above is what I add to the .bashrc file. And The /usr/share/sumo directory does contain the folders bin and tools.

So can anyone tell me what mistakes I have made?

Thanks

Yu Xingguang