cfv is a utility to both test and create .sfv, .csv and md5sum files. These files are commonly used to ensure the correct retrieval or storage of data. Features: - supports .sfv, .csv(2, 3, and 4 field variants), md5sum, bsd md5 sha1sum, .torrent and (test-only) .par, .par2 file formats - automatic checksum file naming ability in create mode - recursive operation - show unverified files option - ignore case and fix path seperator options for cross platform use - transparent gzip support for checksum files - configurable renaming of bad files (with testing against previous bad files, to save only unique differing copies)