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Downloads
XQK is available both as a desktop application and as a command-line utility for Windows, macOS, and Unix/Linux.
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Desktop application:
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Windows MSI installer (installs to C:\Program Files; requires Administrator rights)
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Windows EXE installer (installs to the current user directory in C:\Users; no Administrator rights required)
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MacOS installer
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Linux DEB installer
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Linux RPM installer
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GZip archive (for all platforms; extract the archive and read the README)
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Command-line utility:
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Standalone JAR (xqk.jar). Save xqk.jar somewhere; ensure that Java is installed (JRE 1.8 or later) and is on your PATH; from the directory containing xqk.jar, run (e.g.) as follows:
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)
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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.)