CP/M Compression and Archiving Information
This information comes from an old document describing the various file extensions and how to uncompress and/or extract the files.
|
Extension |
Name |
Comments |
|---|---|---|
|
.LBR |
Library |
A method of containing files, no compression. Create with NULU or LAR (various revisions) Extract with NULU or DELBR. |
|
.?Q? |
Squeeze |
Individual file compression. Create with SQUEEZE, uncompress with UNSQUEEZE. The utilities names may vary. Note: the program changes only the center character in the file extension. I.e. If the original file name is FOO.TXT, the squeezed file will be named FOO.TQT. |
|
.?Z? |
Crunch |
Individual file compression. Create with CR, CRUNCH (various revisions). Uncompress with UNCR, UNCRUNCH (various revisions). |
|
.?Y? |
LZH-CRUNCH |
Individual file compression. Create with CRLZH20 and uncompression with UCRLZH20. |
|
.ARC |
Archive |
A true archiver. Compresses and archives multiple files. Cross-platform compatible (DOS, Unix, etc.) |
|
.ARK |
Archive |
A true archiver. The default name for ARC under CP/M |
|
.ZIP |
Zip |
A true archiver. No utility to create under CP/M, the older versions of ZIP files can be extracted with UNZIP (various versions). |
|
.LZH |
LZH |
A true archiver. Create with LHARC and extract with LHARD. The CP/M version cannot handle LH5 compression. |
|
.ARJ |
Arj |
A true archiver. No utility to create under CP/M. Older versions of ARJ files can be extracted with UNARJ. |
|
.PMA |
PMA |
A true archiver. Available only for CP/M. PMAUTOAE.COM is the self extracting file to find. This utility creates the best compression available under CP/M. It also has the ability to make self-extracting files that are archives. NOTE: has the ability to extract LH5 LZH archives create on other platforms. |
