you might want to try this:
for anaconda 2 :
export PATH=~/anaconda2/bin:$PATH
for anaconda 3 :
export PATH=~/anaconda3/bin:$PATH
for anaconda 4 :
Use the Anaconda Prompt
and then
conda --version
to confirm that it worked.
The export PATH=~/anaconda3/bin:$PATH works but stops when you exit the terminal in order change that you have to run sudo nano ~/.bashrc and then copy the path into the file and save it after that you activate the changes using source .bashrc.
check with conda install anaconda-navigator
if not installed follow the anaconda install instructions again
follow along with this video
https://youtu.be/Pr25JlaXhpc
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