LArc

File Format
Name	LArc
Ontology	Electronic File Formats Archiving LArc
Extension(s)	.lzs
Released	1988

LArc (not to be confused with LHarc) is a compressed archiver program for DOS. It was developed by Kazuhiko Miki, with Haruhiko Okumura and Ken Masuyama. Its native file format is sometimes called LZS. It uses generalized LHA format, and was possibly the originator of it. It was based in part on Okumura's LZSS software.

See LHA for more information relevant to LArc format.

Compression schemes

ID	Description and remarks
-lz2-
-lz3-
-lz4-	Uncompressed
-lz5-	LZ77/LZSS, 4k window. Almost identical to "SZDD" used in MS-DOS installation compression.
-lz7-
-lz8-
-lzs-	LZ77/LZSS, 2k window

Identification

One of the listed 5-character LArc compression scheme IDs appears at offset 2.

Software

• LArc v3.33 (1989-02-25)
• lhasa
• LHa for Unix

(Wanted: Other versions of LArc.)