NAME

zck_delta_size —

calculate the differences between two zchunk files

SYNOPSIS

zck_delta_size [-v | --verbose] file1 file2

zck_delta_size -? | --help | --usage | --version

DESCRIPTION

The zck_delta_size utility examines two zchunk compressed files and determines how similar they are: how many chunks are the same between the files, so that tools like e.g. rsync(1) or zckdl(1) could only transfer the small parts that differ instead of the full files. This is especially useful for structured files that have been compressed using the zck(1) tool's -s (--split) option.

The zck_delta_size utility accepts the following optional arguments:

-v, --verbose: Verbose operation; display some diagnostic output.
-?, --help: Display program usage information and exit.
--usage: Display brief program usage information and exit.
--version: Display program version information and exit.

EXIT STATUS

The zck_delta_size utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

Examine two zchunk files:

zck_delta_size doc1.txt.zck
  doc2.txt.zck

AUTHOR

The zck_delta_size utility was written by Jonathan Dieter ⟨jdieter@gmail.com⟩. This manual page stub was written by Peter Pentchev ⟨roam@ringlet.net⟩.