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The Linux Joystick Driver provides support for a variety of joysticks and similar devices. This package includes several utilities for setting up, calibrating, and testing your joystick.
Utilities for the JPackage Project <http://www.jpackage.org/>. It contains also the License, man pages, documentation, XSL files of general use with maven2, a header file for spec files, etc. Please See the /usr/share/doc/jpackage-utils-1.7.5/jpackage-utils-README file for more information.
lightweight and flexible command-line JSON processor jq is like sed for JSON data – you can use it to slice and filter and map and transform structured data with the same ease that sed, awk, grep and friends let you play with text. It is written in portable C, and it has zero runtime dependencies. jq can mangle the data format that you have into the one that you want with very little effort, and the program to do so is often shorter and simpler than you'd expect.
JRuby is a 100% Java implementation of the Ruby programming language. It is Ruby for the JVM. JRuby provides a complete set of core "builtin" classes and syntax for the Ruby language, as well as most of the Ruby Standard Libraries.