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There is no guaranteed warranty under the GNU General Public License, however it does guarantee the ability to modify, publish, and distribute any changes you make under the same license. And AFAIK it does not bar you from charging for said software as long as you also distribute the source code for it.
What else can I help you with?
How is Linux licensed?
Linux is licensed under the terms of the GPL. You are free to view, modify, and distribute the source code, provided that you make your changes available under the GPL as well.
How Linux licensed?
The Linux kernel is licensed under the GPL version 2.
Is there any CAD package compatible with both Windows and Linux?
Yes. Several CAD suites have versions for both Windows and Linux, including:QCad (commerical and GPL versions)NX (commercial)BRL-CAD (GPL)AutoQ3D (GPL)Abaqus (commercial)gCAD3D (proprietary freeware)Archimedes (GPL)
Is Linux open software or not?
Yes, Linux is an open source kernel released under the GPL.
Is there a list of popular Linux libraries covered by strict GPL license not LGPL or GPL with a linking exception?
There is no list unless someone is keeping track of them by themselves.
What is the cost of Linux software?
Completely free. If someone sells you Linux, it is legitimate, however, it will not be for a license to use the software. The GPL is not that kind of license. However, it is still free as in freedom, not free as in beer, meaning it is entirely valid under the GPL to sell Linux.
Which license is required to edit the source code in Linux?
You do not need a license to edit Linux's source code. The GPL applies only to how you distribute it. End users do not license Linux in any way for use or modification, they're allowed to do anything they like, so long as if they try to redistribute the result they do so under the terms of the GPL.
What is an advantage of selecting an operating system that has a GPL license over one with a commercial license?
The GPL allows end-users to modify and enhance the code, if they desire, to better suit their environment. Some common operating systems, which are released under the GPL, include Linux and BSD.
Can you incorporate Linux in a proprietary product?
Many embedded devices incorporate Linux, and those are proprietary products. But the Linux license (GPL) requires that the distributor also make the source code available, including any modifications they may have made to the operating system.
What does the GNU general public license require software developers to do when modifying Linux versions?
GNU doesn't regulate anything. The GPL, on the other hand, requires that if you redistribute Linux with your modifications, that you make the source code of your modifications available as well. Keep in mind this only applied to DISTRIBUTION. In-house/personal-use stuff you are literally unrestricted and can even keep modifications to yourself. To make this a little less confusing, consider this: 1. Distributor X makes Y modification to Linux. 2. X sends out Linux with Y modification and has to make Y available openly without restriction. 3. End user Z gets Linux with Y. 4. Z modifies Linux with Y with further modification W. 5. Because Z is not sharing Linux with modifications Y and W, he doesn't have to share W at all. A more real world example: 1. nVidia makes an excellent proprietary driver for their video cards on Linux. 2. Because the driver is proprietary, this driver cannot be included with the kernel tree itself. 3. Instead, the end user typically has Linux installed with a kernel and has to download and install the driver themselves, typically over their distribution's repositories. There used to be a debate about whether this driver violates the GPL anyway over "derived works" clauses, though even the FSF (Responsible for the GPL and its terms.) has pretty much held there is no such violation. Further, the GPL, being a license and not a law, cannot take away the rights of the OWNER of the copyright. If I am the sole owner of code I have licensed under the GPL, the GPL can't stop me at all from relicensing the whole shebang under a proprietary commercial license. Some companies, such as Canonical, even have "copyright reassignment" agreements with contributors that legally transfers copyright from the modder to Canonical and it won't violate the GPL, however a lot of people find this shady and against the spirit of free software. Still, because of this, if you're sole copyright holder and want to include proprietary code with your work, you won't be able to use the GPL without violating it, though technically a copyright holder cannot violate their own copyright. I am unsure if the GPL can stop a copyright holder from including proprietary software of their own creation directly into GPL code of their own creation, but it would definitely stop anyone else from redistributing the whole package themselves unless they remove the proprietary parts.
What is the cost to purchase a Linux license?
Nothing. The GPL is not a license you purchase. It is legal to sell Linux distributions, but most (Except for Red Hat Enterprise and a few others.) don't cost a thing and are free to download.
What is the difference in cost between Linux and Windows?
Linux is free and is only charged a minimal if you desire support. For more information go to wikipedia.org and search for GPL which tells you more about Linux. Windows is a patented operating system which has to be bought although pirated versions are free you are liable to legal prosecution if you use piracy.
