installation - masikol/barapost GitHub Wiki
You can get "barapost" in the following ways:
Way 1: go to terminal and run git clone https://github.com/masikol/barapost.git
Way 2: download ZIP archive (green button at the top right of that page. Then "Clone or download" -> "Download ZIP").
After that, you can find executable Python scripts in directory barapost/barapost. Scripts can be run in place.
Or you can add this directory to your PATH variable so that you won't need to enter full script's path to run it -- just it's name, for example:
barapost-prober.py some_reads.fastq
instead of
/home/user/some/more/long/useless/path/barapost/barapost/barapost-prober.py some_reads.fastq
If you are not sure how to do this, following links can help you: