This software is a functional copy of the sha256sum and sha512sum tools implemented in the GO programming language as an exercise.

Usage:

  -reffile string
    	Name of file containing reference values
  -refval string
    	Reference value to check
  -use512
    	Use SHA512 instead of SHA256 if present
  -usebsd
    	Use BSD format for output. More or less ignored for verification

Any files that are to be hashed can be specified after the options.