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when we talk about Gnu/Linux distro we mean to talk about those Linux distro those incorporate the idea of GNU as well
so which distros are Gnu/linux distros i.e. they contain all free softwares
free not in price but as defined by Gnu
* The freedom to run the program, for any purpose (freedom 0).
* The freedom to study how the program works, and adapt it to your needs (freedom 1). Access to the source code is a precondition for this.
* The freedom to redistribute copies so you can help your neighbor (freedom 2).
* The freedom to improve the program, and release your improvements to the public, so that the whole community benefits (freedom 3). Access to the source code is a precondition for this.
any clarification in this matter will be realy helpfull
Almost all distributions allow these freedoms, albeit under certain constraints, as imposed by thier licenses.
Debian GNU/Linux are very particular about GNU and the GPL.
Freedom 3 that you talk about is where most licenses differ, when they try to force you to distribute the modified code a certain way. For example: GPL wants derivative works to be GPL; CC-BY Wants attribution; CC-NC Wants derivative works to be distributed without the intent of making money and so on.
You see, if a software vendor does not allow freedom 1, then the license is not deemed as Open Source compatible and in essence the software is not Free/Open Source.
As I understand it, the use of GNU/Linux is not based on any discussion of the various freedoms you have outlined. GNU/Linux is used by Richard Stallman and his adherents to denote any system using GNU utilities and a Linux kernel, which is practice is pretty much all of the distributions in common use.
However, others would point out that a modern Linux-based operating systems contains much more than just GNU and Linux - the X Window system, a desktop environment, the many applications that are usually bundled with a distribution and so on.
Personally, while I can understand that Stallman is peeved that the contribution of the GNU project and the Free Software Foundation is often overlooked, and by commentators who should know better, I think he's batting on a losing wicket if he hopes to get such a clumsy title as GNU/Linux adopted for common use. He'd have more luck getting someone to finish of the HURD so he can release a standalone GNU system...
"We use Linux-based GNU systems today for all of our work, and we hope you will use them too. Today there are many different variants of the GNU/Linux system (often called ``distros''). Most of them include non-free software--their developers follow the philosophy associated with Linux rather than that of GNU. But there are also completely free GNU/Linux distros."
so what we use is a "gnu/linux distro"
it might not be "free gnu/linux distro"
as there are only few "free gnu/linux distro"