code: def remove_trailing_stars(self, new_path=None, in_place=True, check=False):
          
          # Optional check #
          if check and int(sh.grep('-c', '\*', self.path, _ok_code=[0,1])) == 0: return self
          # Faster with bash utilities #
          if in_place is True:
              sh.sed('-i', 's/\*$//g', self.path)
              return self
          # Standard way #
          if new_path is None: new_fasta = self.__class__(new_temp_path())
          else:                new_fasta = self.__class__(new_path)
          new_fasta.create()
          for seq in self: new_fasta.add_str(str(seq.seq).rstrip('*'), seq.id)
          new_fasta.close()
          return new_fasta
docs: Remove the bad character that can be inserted by some programs at the
          end of sequences.