Linux, in the tradition of UNIX-like operating systems, implements file system permissions using a rather coarse scheme. While this is sufficient for a surprisingly large set of applications, it is too inflexible for many other scenarios. For that reason, all the major commercial UNIX operating systems have extended this simple scheme in one way or the other. This is an effort to implement POSIX-like Access Control Lists for Linux. Access Control Lists are built on top of Extended Attributes, which can also be used to associate other pieces of information with files such as Filesystem Capabilities, or user data like mime type and search keywords.
For users on Linux and Unix, KDE offers a full suite of user workspace applications which allow interaction with these operating systems in a modern, graphical user interface. This includes Plasma Desktop, KDE's innovative and powerful desktop interface. Other workspace applications are included to aid with system configuration, running programs, or interacting with hardware devices. While the fully integrated KDE Workspaces are only available on Linux and Unix, some of these features are available on other platforms. In addition to the workspace, KDE produces a number of key applications such as the Konqueror Web browser, Dolphin file manager, and Kontact, the comprehensive personal information management suite. The list of applications includes many others, including those for education, multimedia, office productivity, networking, games, and much more. Most applications are available on all platforms supported by the KDE Development. KDE also brings to the forefront many innovations for application developers. An entire infrastructure has been designed and implemented to help programmers create robust and comprehensive applications in the most efficient manner, eliminating the complexity and tediousness of creating highly functional applications.
procps is a package of utilities which includes ps, vmstat, top, w, skill, snice, pgrep, pkill, free, sysctl, pmap, uptime, and kill. These utilities report what is running, who is logged in, how long the system has been running, and what is using up memory. They can be used to kill processes and change run-time kernel configuration values.
IRRToolSet is a set of policy analysis tools, written in C++. It's designed to run under UNIX, using Tcl/Tk for graphics. There are tools for generating router configuration files, displaying and checking routes, generating aggregations of networks, etc. This project was formerly known as the Routing Arbiter ToolSet (RAToolset), and was maintained by ISI.
Panasync Tools provides a set of commands that enables version tracking among plain file copies. Retaining the basic functionality of standard copy commands, one can always track if a file has seen more updates than another file, and determine redundant or equivalent file copies. The approach is totally decentralized and serverless, and the functionality is achieved by small command-line user level programs that manipulate (by duplicating, comparing, joining and moving) any given file. By copying files with these commands users can detect if those files forgotten on disks or dispersed on different file systems and computers hold obsolete versions, and can thus be deleted, or need to be merged when depicting parallel updates. The updates, themselves can be done by any application since the system keeps a digest of the files to detect changes.
The Chemistry Development Kit (CDK) is a library of Java classes for chemo-, bioinformatics, computational chemistry, and chemometrics. It provides important algorithms like substructure search, SMILES, Gasteiger charges, QSAR descriptor calculation, 3D structure generation, 2D layout and rendering, many IO formats, atom typing, and more.
libptp is a Picture Transfer Protocol support library. It is used for downloading images from PTP cameras. It currently works with most modern cameras from the following vendor: Kodak, HP, Nikon, Canon, Panasonic, Olympus, Konica, Minolta, Fuji, Ricoh, and Sony. This package also contains "ptpcam", the tool used to tweak camera properties and perform some basic operations.
ReadyExec is a client-server system designed to alleviate the problem of high-startup-costing applications, such as those written in Python, which are run repeatedly (e.g., in procmail) and use stdio files, argv, environment variables, and exit codes to interact with their environment. A small 'conduit' program is used to send such process-specific information to the server, and acts as an intermediary while the 'heavy' application code runs in the server, only needing to be loaded once. A server for Python code is available.