# mktorrent > Create BitTorrent metainfo files. > More information: . - Create a torrent with 2^21 KB as the piece size: `mktorrent -a {{tracker_announce_url}} -l {{21}} -o {{path/to/example.torrent}} {{path/to/file_or_directory}}` - Create a private torrent with a 2^21 KB piece size: `mktorrent -p -a {{tracker_announce_url}} -l {{21}} -o {{path/to/example.torrent}} {{path/to/file_or_directory}}` - Create a torrent with a comment: `mktorrent -c "{{comment}}" -a {{tracker_announce_url}} -l {{21}} -o {{path/to/example.torrent}} {{path/to/file_or_directory}}` - Create a torrent with multiple trackers: `mktorrent -a {{tracker_announce_url,tracker_announce_url_2}} -l {{21}} -o {{path/to/example.torrent}} {{path/to/file_or_directory}}` - Create a torrent with web seed URLs: `mktorrent -a {{tracker_announce_url}} -w {{web_seed_url}} -l {{21}} -o {{path/to/example.torrent}} {{path/to/file_or_directory}}`