cksum(1) "ctools" # NAME cksum - calculate the cyclic redundancy check (CRC) for files # SYNOPSIS *cksum* _file_... # DESCRIPTION *cksum* will calculate the cyclic redundancy check value (CRC, per ISO/IEC 8802-3:1996) and print it, as well as the file size, for each _file_ to stdout. This purpose of this command is to check the integrity of a file against a reference copy, for example to verify a file transmitted over a noisy connection. It is not a cryptographic-grade algorithm. # DISCLAIMER This command is part of ctools and is compatible with POSIX-1.2017, and may optionally support XSI extensions. This man page is not intended to be a complete reference, and where it disagrees with the specification, the specification takes precedence.