ZCK\_READ\_HEADER(1) General Commands Manual ZCK\_READ\_HEADER(1)

# [NAME](#NAME)

`zck_read_header` — display information from the header of a zchunk file

# [SYNOPSIS](#SYNOPSIS)

`zck_read_header` \[`-c` | `--show-chunks`] \[`-f` | `--verify`] \[`-q` | `--quiet`] \[`-v` | `--verbose`] `file`

`zck_read_header` `-`? | `--help` | `--usage` | `--version`

# [DESCRIPTION](#DESCRIPTION)

The `zck_read_header` utility reads a zchunk file's header and displays some of the information recorded there.

The `zck_read_header` utility accepts the following optional arguments:

[`-c`](#c), `--show-chunks`

Display information about the individual chunks, too.

[`-f`](#f), `--verify`

Instead of only reading the zchunk file's header, read the whole file and verify its integrity.

[`-q`](#q), `--quiet`

Quiet operation; only display error messages.

[`-v`](#v), `--verbose`

Verbose operation; display some diagnostic output.

`-`?, `--help`

Display program usage information and exit.

[`--usage`](#usage)

Display brief program usage information and exit.

[`--version`](#version)

Display program version information and exit.

# [EXIT STATUS](#EXIT_STATUS)

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

# [EXAMPLES](#EXAMPLES)

Examine a zchunk file's header:

`zck_delta_size doc.txt.zck`

# [SEE ALSO](#SEE_ALSO)

[unzck(1)](/man/enterprise-packages/zchunk/unzck.1), [zck(1)](/man/enterprise-packages/zchunk/zck.1), [zck\_delta\_size(1)](/man/enterprise-packages/zchunk/zck_delta_size.1), [zck\_gen\_zdict(1)](/man/enterprise-packages/zchunk/zck_gen_zdict.1), [zckdl(1)](/man/enterprise-packages/zchunk/zckdl.1)

# [AUTHOR](#AUTHOR)

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

May 31, 2020 Linux 4.19.0-gvisor

---

Document: zck_read_header(1) from zchunk 1.5.4-r5 (Chainguard OS)
Source: https://github.com/zchunk/zchunk.git