Simple function returning file extension for given compression schema.

It could be easily handled with hash, but I decided to use function, to have explicit die/croak in case of bad compression type.


Wrapper around Digest::MD5 to calculate md5 sum of file.

Returned checksum is hex encoded - like output of md5sum program.


Runs given program, adding proper escapes of values, and gets stdout and stderr of it.

Returns hashref which contains:

  • stderr - stringified stderr output from program

  • stdout - stringified stdout output from program

  • status - return value of system() call

  • error_code - undef in case there was no error, or stringified error information