3.2.1 Major Applications

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  • Post last modified:July 9, 2023
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3.2.1 Major Applications

The Linux kernel can run a wide variety of software across many hardware platforms. A computer can act as a server, which means it primarily handles data on others’ behalf, or as a desktop, which means a user interacts with it directly. The machine can run software or be used as a development machine in the process of creating software. A machine can even adopt multiple roles as Linux makes no distinction; it’s merely a matter of configuring which applications run.

One resulting advantage is that Linux can simulate almost all aspects of a production environment, from development to testing, to verification on scaled-down hardware, which saves costs and time. A Linux administrator could run the same server applications on a desktop or inexpensive virtual server that are run by large internet service providers. Of course, a desktop would not be able to handle the same volume as a major provider would, but almost any configuration can be simulated without needing powerful hardware or server licensing.

Linux software generally falls into one of three categories:

  • Server ApplicationsSoftware that has no direct interaction with the monitor and keyboard of the machine it runs on. Its purpose is to serve information to other computers, called clients. Sometimes server applications may not talk to other computers but only sit there and crunch data.
  • Desktop ApplicationsWeb browsers, text editors, music players, or other applications with which users interact directly. In many cases, such as a web browser, the application is talking to a server on the other end and interpreting the data. This is the “client” side of a client/server application.
  • ToolsA loose category of software that exists to make it easier to manage computer systems. Tools can help configure displays, provide a Linux shell that users type commands into, or even more sophisticated tools, called compilers, that convert source code to application programs that the computer can execute.

The availability of applications varies depending on the distribution. Often application vendors choose a subset of distributions to support. Different distributions have different versions of key libraries, and it is difficult for a company to support all these different versions. Some applications, however, like Firefox and LibreOffice are widely supported and available for all major distributions.

The Linux community has come up with lots of creative solutions for both desktop and server applications. These applications, many of which make up the backbone of the Internet, are critical to understanding, and utilizing the power of Linux.

Most computing tasks can be accomplished by any number of applications in Linux. There are many web browsers, web servers, database servers, and text editors from which to choose. Evaluating application software is an important skill to be learned by the aspiring Linux administrator. Determining requirements for performance, stability, and cost are just some of the considerations needed for a comprehensive analysis.