$ courlan --inputfile url-list.txt --outputfile cleaned-urls.txt
$ courlan --help
usage: courlan [-h] -i INPUTFILE -o OUTPUTFILE [-d DISCARDEDFILE] [-v]
               [-p PARALLEL] [--strict] [-l LANGUAGE] [-r] [--sample SAMPLE]
               [--exclude-max EXCLUDE_MAX] [--exclude-min EXCLUDE_MIN]

Command-line interface for Courlan

options:
  -h, --help            show this help message and exit

I/O:
  Manage input and output

  -i INPUTFILE, --inputfile INPUTFILE
                        name of input file (required)
  -o OUTPUTFILE, --outputfile OUTPUTFILE
                        name of output file (required)
  -d DISCARDEDFILE, --discardedfile DISCARDEDFILE
                        name of file to store discarded URLs (optional)
  -v, --verbose         increase output verbosity
  -p PARALLEL, --parallel PARALLEL
                        number of parallel processes (not used for sampling)

Filtering:
  Configure URL filters

  --strict              perform more restrictive tests
  -l LANGUAGE, --language LANGUAGE
                        use language filter (ISO 639-1 code)
  -r, --redirects       check redirects

Sampling:
  Use sampling by host, configure sample size

  --sa