klik (packaging)

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klik
Developer: Simon Peter
Latest release: 0.5r9 / June 7, 2006
OS: Linux
Genre: Software download system
License: GPL (client)
Website: klik.atekon.de

klik is a system for software download and usage on Linux.

Contents

klik does not "install" software in the traditional sense (i.e., it does not put files all over the place in the system). It uses one .cmg file per application. Each one is self-contained: it includes all libraries the application depends on and that are not part of the base system. In this regard, it is similar to "application virtualization". One can klik a file even if they are not a superuser, or they are using a live CD.

klik is integrated with web browsers on the user's computer. Users download and install software by typing a URL beginning with klik://. This downloads a klik "recipe" file, which is used to generate the .cmg file. In this way, one recipe can be used to supply packages to a wide variety of platforms.

klik files are often simpler than compiling and installing an application, as no installation actually takes place. The .cmg file is a compressed image which is temporarily mounted to allow access to the program, but not having to extract the program or modify the underlying system. Currently only 8 klik programs can be run at once because of the limitation of mounting compressed images with the Linux kernel, unless FUSE is used. The file is remounted each time the program is run, meaning the user can remove the program by simply deleting the .cmg file.

klik was designed in 2004 by Simon Peter. A next version, klik2, is in development; it will natively incorporate the FUSE kernel module.

klik architecture

ROX uses directories (AppDirs) as application bundles.

Glick is a project similar to klik, created by Red Hat employee Alexander Larsson[1][2][3]. It is intended to be a "runtime-less" application bundle environment, in which application bundles are executed and ran natively without the need for a running klik/glick client. However, glick currently only addresses a fraction of klik's scope (steps 5 and 6 of the exhibit).

Zero Install, another similar project, does address steps 1-5, but does not follow the "one file per application" philosophy.

  1. ^ Experiments with runtime-less app-bundles, by Alexander Larsson, August 7, 2007
  2. ^ Glick brings better standalone application bundles to Linux, by Ryan Paul, Ars Technica, August 23, 2007
  3. ^ klik2 discussions inspire Alexander Larsson (Red Hat/Gnome) to publish 'glick', by pipitas, KDE Developers blog, August 7, 2007

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