Fresh ROOT installation --> Uninstall and then Install Root

I have been trying to reinstall root from scratch.

I have followed up with discussions in this forum, such as :

for the uninstallation process.
and deleted the directory mentioned in $ROOTSYS
removed the source path for ‘’ from .bashrc
But still
while building fresh, I get an error, using cmake --build . --target install
pointing to the directory I had build root last

So is there some history file for root that I need to delete?

ROOT Version: 6.16.00
Platform: Ubuntu 18.04.2 LTS
Compiler: Not Provided

Seems like I have found a solution to the problem :

There is a file in the home dir (Ubuntu 18.04)
by the name : ‘.root_hist’

It should be deleted for complete uninstallation
followed by deletion of the built dir of root ,
removal of the line :
source <path/to/installation/>

else there will be problems while reinstalling ROOT .

Cheers ,

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