ShrinkIt

ShrinkIt (named NuFX archive and file format)

File:Shrinkit 3.4 - 1996.png
Filename extension	.shk (regular NuFX archives), .sdk (NuFX disk images)
Initial release	1987?
Latest release	1.0.6 (GS), 3.4 (Apple II) GS: 30 April 1992 (1992-04-30), A2: 24 January 1991 (1991-01-24)
Type of format	Data compression
Extended from	.BNY (Binary II envelope) .BQY (squeezed file in Binary II envelope) .BXY (NuFX in Binary II envelope)
Extended to	.SDK NuFX disk image

SHK is an archive file format that supports lossless data compression. A .SHK file may contain one or more files or directories that may have been compressed. This format actually specified via the NuFX file format, was meant to replace and modernize "Binary II" evelopes back in the 1980's which had the .BNY or .BQY extensions. The .SHK file format permits a number of compression algorithms. This format was originally created in 1980's by Andy Nicolas and was first implemented within the ShrinkIt utility. The .SHK format was actually defined as the NuFX file format and compression schemes.

History

Andy E. Nicholas created the NuFX file format including compression to update the "Binary II" format with an extension like .BNY and created a pkzip like program called ShrinkIt for "Apple II" systems that eventually migragted to the Apple IIgs as GS-Shrinkit.

This was the defacto Apple II file archiving format and method.

Version history

Andy E. Nicholas, created Shrinkit which also evolved the apple BNY format or whatever proceeded it then to move on from old Apple IIe/c computers with 128KB of memory to the next generation Apple IIGS computers.

See also

• Comparison of file archivers
• Comparison of archive formats
• List of archive formats
• LZW