Get out of root conda environment

Once I have installed miniconda, I am permanently inside the root miniconda environment eg:

luc@montblanc:~$ conda info --envs
# conda environments:
#
bunnies                  /home/luc/miniconda3/envs/bunnies
expose                   /home/luc/miniconda3/envs/expose
testano                  /home/luc/miniconda3/envs/testano
testcondaenv             /home/luc/miniconda3/envs/testcondaenv
root                  *  /home/luc/miniconda3

Which results on the use of this environment python3 executable:

luc@montblanc:~$ which python3
/home/luc/miniconda3/bin/python3

How can I get out of this root environment without actually uninstalling python. E.g. I want

luc@montblanc:~$ which python3
/usr/bin/python3

and refer to the miniconda distribution of python explicitly (using full path /home/luc/miniconda3/bin/python3) when I need it.

I don't want to achieve any final goal doing this, I just want to understand what is happening and how it works.

Solution

See your .bashrc file. Miniconda adds their paths and change the default, find this file and then change or add the path you want, or remove the anaconda/miniconda path.

In your .bashrc (probably ~/.bashrc) you will see something like:

# added by Miniconda3 4.3.14 installer
export PATH="/path/to/miniconda3/bin:$PATH"

Add your path after this line, change this path or, for temporarily, use export on command line.

Obs.

After this, probably you will have to use miniconda call by full path.
Restart your session after changes in .bashrc.