Based on the previous observation, we set the cut-off for keeping sequences for further analysis to a count of 10. To do this, we use the :doc:`obigrep <scripts/obigrep>` command.
The ``-p 'count>=10'`` option means that the ``python`` expression :py:mod:`count>=10` must be evaluated to :py:mod:`True` for each sequence to be kept.
The ``-p 'count>=10'`` option means that the ``python`` expression :py:mod:`count>=10` must be evaluated to :py:mod:`True` for each sequence to be kept. We also remove
sequences with a length shorter than 80 bp (option -l).