parallel-sums - Calculate checksums in parallel using multiple algorithms

       Written by Steve McIntyre (steve@einval.com)

Jigit jigdo tools                                 February 2019                                 PARALLEL-SUMS(1)

       Copyright 2017-2019 Steve McIntyre (steve@einval.com)

       parallel-sums may be copied under the terms and conditions  of  version  2  of  the  GNU  General  Public
       License, as published by the Free Software Foundation (Cambridge, MA, USA).

       parallel-sums  is  designed  to  make  it  faster  and  easier  to  create  checksum files using multiple
       algorithms. It will only read the data from each input file once, spawning  a  new  thread  per  checksum
       algorithm requested and running calculations in parallel.

       Specify  the  list  of desired checksum algorithms along with the output filename for each checksum type,
       then pass the list of files.

       The output is intended to be 100% compatible with  the  file  formats  of  existing  tools  like  md5sum,
       sha256sum etc.

       --algoALGOSUMS
              Checksum all input files using the algorithm "algo" and output the checksums in the file ALGOSUMS.

       --help Print usage information and list the checksum algorithms supported.

parallel-sums--md5sumMD5SUMS--sha256sumSHA256SUMS*.iso
              Read all files matching the pattern *.iso. In parallel, checksum each file using the MD5 algorithm
              (writing   to   "MD5SUMS")  and  checksum  each  file  using  the  SHA256  algorithm  (writing  to
              "SHA256SUMS").

       parallel-sums - Calculate checksums in parallel using multiple algorithms

md5sum(1), sha1sum(1), sha256sum(1) and sha512sum(1).

parallel-sums --algo1 ALGO1FILE [--algo2 ALGO2FILE ... --algoN ALGONFILE] file1 [file2 ... fileN

       parallel-sums --help