NAME

pipe-checksum — Write stdin to file and create a file with the checksum of the data

SYNOPSIS

DESCRIPTION

pipe-checksum writes all data from standard input into a given file "<file>". Furthermore, it computes the checksum of the data and writes it to a new file "<file>.checksum". The used message digest algorithm can be configured, it defaults to SHA256. The checksum format is BSD-style checksum format, as written for example by the sha256sum tool. Therefore, any tool supporting this format can be used for comparison.

ARGUMENTS

The following arguments may be provided:

-D MD5|SHA1|SHA256|SHA384|SHA512|... | --digest MD5|SHA1|SHA256|SHA384|SHA512|...

Sets the message digest. Any digest supported by the underlying libcrypto library is possible. Calling pipe-checksum with no options, or with invalid digest, provides the list of all supported digests. Default: SHA256.

-h | --help

Prints command help.

--version

Prints program version.

EXAMPLES

date | pipe-checksum date.txt

 

sha256sum --check date.txt.checksum

 

date | pipe-checksum date.txt --digest SHA384

 

dd if=/dev/urandom bs=12345 count=67 | hexdump | pipe-checksum random.txt

 

dd if=/dev/urandom bs=12345 count=67 | pipe-checksum random.txt --digest SHA512

 

sha512sum --check random.txt.checksum

 

pipe-checksum --version

 

pipe-checksum --h

 

AUTHORS

Thomas Dreibholz
https://www.nntb.no/~dreibh/hipercontracer
mailto://dreibh@simula.no