.TH ancient 1 "December 25 2020"
.SH NAME
ancient \- decompression routines for ancient formats
.SH SYNOPSIS
.B ancient
.RI [ identify | verify | decompress | scan ] " inputfile" " optionaloutputfile"
.br
.SH DESCRIPTION
This manual page documents briefly the
.B ancient
command.
.PP
\fBancient\fP is a collection of decompression routines for old formats popular
in the Amiga, Atari computers and some other systems from 80's and 90's as well
as some that are currently used which were used in a some specific way in these
old systems.
.br
For simple usage both a simple command line application as well as a simple API
to use the decompressors are provided. The compression algorithm is
automatically detected in most cases, however there are some corner cases
where it is not entirely reliable due to weaknesses in the old format used.
.br
.SH OPTIONS
These programs DO NOT follow the usual GNU command line syntax.
.TP
.B identify packed_input_file
Identifies compression used in a file.
.TP
.B verify packed_input_file unpacked_comparison_file
Verifies decompression against known good unpacked file.
.TP
.B decompress packed_input_file output_file
Decompresses single file
.TP
.B scan input_dir output_dir
Scans input directory recursively and stores all found.
Known compressed streams to separate files in output directory.
.SH SEE ALSO
.BR unxz (1),
.BR unpigz (1).
.br