Linux Commands: Print a checksum for a file


sum-Linux Command

sum command- Print a checksum for a file
Syntax: sum [options]... [file]...

Description: The sum command should be used with caution, as there are versions for BSD and System V UNIX which give differing results. cksum is the attempt by the POSIX standards developers to correct that mess: it gives the same result for the same file on all POSIX machines.

These are utilities for generating checksums. A checksum is a number mathematically calculated from the contents of a file, for the purpose of checking its integrity. A script might refer to a list of checksums for security purposes, such as ensuring that the contents of key system files have not been altered or corrupted.

Example:

Related: cksum

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