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XQK is available both as a desktop application and as a command-line utility for Windows, macOS, and Unix/Linux.

Desktop application:

Command-line utility:


java -jar xqk.jar compress /path/to/filename.ext (to create an archive)


java -jar xqk.jar decompress /path/to/filename.ext.xqk (to unpack an archive)

Note: XQK compresses and extracts files to the same directory as the original file (the single exception is the Fairchild S7 client-adapter, which only allow files to be written to #USR#/_OUT). The XQK algorithm requires this to ensure RF/R parity. (Fairchild terminals self-correct for RF/R blueshift, meaning that parity is still ensured even though output is to _OUT.)

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