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.Dd May 31, 2020
.Dt ZCKDL 1
.Os
.Sh NAME
.Nm zckdl
.Nd download a zchunk file
.Sh SYNOPSIS
.Nm
.Op Fl -fail-no-ranges
.Op Fl q | Fl -quiet
.Op Fl s Ar file | Fl -source Ns = Ns Ar file
.Op Fl v | Fl -verbose
.Ar url
.Nm
.Fl ? | Fl -help | Fl -usage | Fl -version
.Sh DESCRIPTION
The
.Nm
utility attempts to download a zchunk file in an optimized way,
taking into consideration the chunked structure.
.Pp
The
.Nm
utility accepts the following optional arguments:
.Pp
.Bl -tag -width indent
.It Fl -fail-no-ranges
If the server does not support ranges, fail instead of downloading
the whole file.
.It Fl q | Fl -quiet
Quiet operation; only display warning and error messages.
If specified twice, only display error messages.
.It Fl s | Fl -source
Specify the file to use as a source with the premise that most of
the chunks in the downloaded file will be the same.
.It Fl v , Fl -verbose
Verbose operation; display some diagnostic output.
.It Fl ? , Fl -help
Display program usage information and exit.
.It Fl -usage
Display brief program usage information and exit.
.It Fl -version
Display program version information and exit.
.El
.Sh EXIT STATUS
.Ex -std
.Sh EXAMPLES
Download a zchunk file that is hopefully not much different from
the previous version:
.Pp
.Dl zckdl -s doc1.txt.zck https://example.com/doc2.txt.zck
.Pp
.Sh SEE ALSO
.Xr unzck 1 ,
.Xr zck 1 ,
.Xr zck_delta_size 1 ,
.Xr zck_gen_zdict 1 ,
.Xr zck_read_header 1
.Sh AUTHOR
The
.Nm
utility was written by
.An Jonathan Dieter Aq jdieter@gmail.com .
This manual page stub was written by
.An Peter Pentchev Aq roam@ringlet.net .