olha (Open LHA Archiver) is a GPL-2.0-or-later implementation of the LHA
archive format, wire-compatible with Amiga LHA archives.

Written from scratch under GPL-2.0-or-later.  No code was copied from any
existing implementation.  Algorithm behaviour was derived from published
papers, public format documentation, and the GPL source of LHa for Unix
(lhafu) used as an algorithm reference for -lh2- and -lh3-.

Features:
  - Create, add, extract, list, test and delete LHA archives
  - Full read/write support for all common compression methods:
      -lh0- (store), -lh1-, -lh2-, -lh3-, -lh4-, -lh5-, -lh6-, -lh7-,
      -lzs-, -lz5-, -lhd- (directory entries)
  - Header levels 0, 1 and 2
  - Extension headers: Unix permissions, uid/gid, mtime, Amiga protection bits
  - Amiga path quirks: volume prefix stripping, backslash normalisation
  - Self-extracting .run generation

This archive contains four per-CPU binaries and a self-extracting stub:

  olha_000   68000 / 68010
  olha_020   68020
  olha_030   68030
  olha_040   68040 / 68060
  sfx_stub   Self-extracting stub (68000, loads on all AmigaOS versions)

Usage:
  olha {c|a|e|x|l|v|t|d} [-lhN] [-w<dir>] archive [file ...]

  c  create archive      a  add/replace members
  e  extract (flat)      x  extract with paths
  l  list                v  list verbose
  t  test integrity      d  delete members

Self-extracting archives:
  Place sfx_stub in the same directory as olha, then:
    olha s myapp.lha             ; produces myapp.run
    olha s myapp.lha release.run ; explicit output name

URL:      https://codeberg.org/MastaTabs/olha

Requires: AmigaOS 2.0 or later (dos.library 36+)