1UNZCK(1)                  BSD General Commands Manual                 UNZCK(1)
2

NAME

4     unzck — decompress a file in the zchunk format
5

SYNOPSIS

7     unzck [-c | --stdout] [--dict] [-v | --verbose] file
8     unzck -? | --help
9     unzck --usage
10     unzck --version
11

DESCRIPTION

13     The unzck utility extracts the original file from a zchunk-compressed
14     one.
15
16     NOTE: The unzck utility will place the new file without the .zck exten‐
17     sion in the current working directory, not in the directory where the
18     original file resides.
19
20     The unzck utility accepts the following optional arguments:
21
22     -c, --stdout
23             Extract the data to the standard output stream, do not write it
24             to a file.
25
26     --dict  Only extract the zstd compression dictionary.
27
28     -v, --verbose
29             Verbose operation; display some diagnostic output.
30
31     -?, --help
32             Display program usage information and exit.
33
34     --usage
35             Display brief program usage information and exit.
36
37     --version
38             Display program version information and exit.
39

EXIT STATUS

41     The unzck utility exits 0 on success, and >0 if an error occurs.
42

EXAMPLES

44     Create (in the current directory) an uncompressed words file from a com‐
45     pressed one:
46
47           unzck /mnt/xfer/words.zck
48
49     Do not create the words file, but send the contents to the standard out‐
50     put stream:
51
52           unzck -c /mnt/xfer/words.zck
53

SEE ALSO

55     zck(1), zck_delta_size(1), zck_gen_zdict(1), zck_read_header(1), zckdl(1)
56

AUTHOR

58     The unzck utility was written by Jonathan Dieter <jdieter@gmail.com>.
59     This manual page stub was written by Peter Pentchev <roam@ringlet.net>.
60
61BSD                              May 31, 2020                              BSD