cksum: Print and verify file checksumscksum by default computes a 32-bit cyclic redundancy check (CRC)
checksum for each given file, or standard input if none are given or for
a file of ‘-’.
cksum also supports the -a/--algorithm option to select the
digest algorithm to use. cksum is the preferred interface
to these digests, subsuming the other standalone checksumming utilities,
which can be emulated using cksum -a md5 --untagged "$@" etc.
Synopsis:
cksum [option]… [file]…
cksum is typically used to ensure that files have not been corrupted,
by comparing the cksum output for the received files with the
cksum output for the original files (typically given in the
distribution).