From the command shell, programs can be launched just by typing their name, as long as they are in your "path", or one of the directories you are allowed to launh applications from, such as /usr/bin or /usr/local/bin.
Desktop environments have their own ways of launching applications, usuall from an application menu.
Yes, if the program is open source.
Linux is an operating system, like Windows, that runs on the Linux Kernel, which is based off of UNIX.
VxWorks is a proprietary operating system. Linux is free and open-source.VxWorks is distributed by a single company. Linux id developed by thousands of companies and individuals around the world.VxWorks is primarily used for real-time embedded applications. Linux is multi-purpose, used from anything from servers to desktops to embedded applications.
Yes and no. Linux will not run Windows applications by itself, however, there are ample tools written for Linux that permit you to run Windows applications on Linux. The open-source WINE software will run a majority of Windows software on Linux. You can even configure Linux to automatically recognize Windows applications and use WINE to run them. Alternatively, there's a wide variety of virtual machine products that permit you to run the Windows operating system as an application under Linux, and, in turn, any Windows applications inside the Windows virtual environment. Finally, some "Windows applications" are written in .Net or Java and can be run directly under Linux using mono and java respectively (albeit, some .Net applications will not yet run under mono).
Linux is an open system, Unix is not.
There are many applications with Linux software package equivalents available. Some examples of these applications include Google Chrome and Google Music Manager.
Linux is a kernel, as such it is used to facilitate communications between applications and computer hardware.
Linux is the best operating system in the world, Linux is Open Source, Secure, Stable, License Free and also multi platform supported OS and shipped with thousands of FREE applications.
If OpenOffice /LireOffice isnt satisfying, try Scribus or LyX (I have no experience with those latter two but they are open source desktop publishing applications that run on Linux).
Yes, Linux is an open source kernel released under the GPL.
Not only can Linux be run on desktop computers, but it can also be run on servers and other types of computers such as tablets and embedded computers. Linux is an open source operating system that is based on Unix, and Unix was first used for computer server applications.
Yes, Linux applications have significantly less viruses than Windows or Mac's OS. As Linux makes up less than two percent of OS usage, it makes no sense to the creators of viruses to make a virsus for Linux.