Dear sir

I want to know that

Are all Linux destros are virus free ?

because windows is affected by so many virus.

Yes, it will be virus free. As long as the Linux box will not be connected to Internet.

But there is no any single device is away from internet connection like smartphone laptop computer etc.

I want virus free destros

May I suggest that you would get much better results by doing a web-search
for introductory tutorials on basic concepts. For example: wiki virus linux
http://wikipedia.org/wiki/Linux_malware
http://www.penguintutor.com/linux/in...linux-security

Also, here's another useful web-research:
https://www.linux.com/learn/myth-bus...immune-viruses
http://www.tecmint.com/linux-operati...is-virus-free/

I could go on copy&pasting links until I "reach the end of the internet"

Oh, here's the list of distros you want: http://distrowatch.com

Operating Systems such as Linux, Windows, Android or any OS are just millions of lines of program codes.

With that said, if there is something that bad guys is able to exploit then it's an opportunity to create a virus.

No such thing as no virus, if at the moment there is no virus. Then I guess only time can tell, maybe waiting for a 10 year old kid to expose a flaw on the system.

Hi...

Please don't forget there are ladies who help out here as well.

Although the likelihood of becoming infected with viruses and malware in Linux is less, it doesn't mean that Linux is completely immune to them. Please take a look at the articles here and here.

Regards...

more or less all the distros are virus free - when you install them. (probably not all of them, but....). From that point - I mean when you have already installed - you need to take care about your own os, so if it will remain virusless or not - depends on you.

2 members found this post helpful.

Very true indeed, if firmware or bios viruses already exist then I guess it's a mad mad world already.

There are no virus free Linux Systems, only virus free Linux Users.
</opinion>

Figure out what is and is not a "virus" and how to best protect yourself using Linux, any Linux.
Surf Smarter.
Stick to Repository-sourced software, IF you are "new".

Perform regular updates.
There are many discussions about the subject of "necessary" vs "unneeded" and you will find convincing arguments to both sides,
but they'd both agree that the user space is the weak link in the chain. Same as Windows.

Malware is always a possibility whatever OS you use. But it is less of a problem in Linux for two reasons:

1) The Linux system of file ownership and permissions makes it much more difficult for a virus to do any damage. For example a program or script downloaded by a browser will not have permission to execute unless you give it. And even then, if you launch it in your own name, it can't damage the system files because they belong to the root user.
2) Every Linux distro has an official repository where clean software is stored for download. You do not crawl around the Internet downloading free programs from dodgy websites.

First of all, discard "biological metaphors" such as "virus" or "infected." A digital computer is not a biologic organism. Unlike you, it cannot "catch" Ebola by walking into the wrong elevator at the wrong time.

"Malware" is malicious software that is running on your computer without your knowledge or consent, and that tries to do harm to yourself and/or to others. Fundamentally, you prevent this by removing the opportunity to do so, and by protecting your data with secure, timely backups. (As in, "they are running continuously throughout the day.")

Probably the single most important admonition I would make today is, "run an ad-blocker!" (Sorry, LQ.) Those annoying advertisements are actually computer programs, running in JavaScript and doing who knows what. Therefore, they represent easily the most-accessible vector for distributing malicious code throughout the Internet in a matter of a few seconds ... unless you block them.

Neither Windows, nor Linux have viruses.

All newly installed OSes do not have viruses.

What level of protection are you looking to achieve? What have you tried regarding researching safe use of software and the internet? What are your web use needs?

Depends on your definition of virus. Sometimes it is misused to include also trojans. Either way, periodically Windoze OEMs have been known to provide a little something extra pre-installed. Every few years something like this happens: https://www.theguardian.com/technolo...ries-microsoft

So far that's not been a problem with any distros. The biggest concern that I can think of is that people coming from a legacy environment have to learn to *not* go to random web sites for software but instead use the package manager exclusively. The old way, unfortunately, is familiar so they'll often try it even though it is harder and dangerous, unlike the package manager which is easy and safe.

Despite my being a fan of Mint, the recent Mint hack proved this otherwise, a good reason for checking hashes when downloading an operating system.

I beg to differ. Google Chrome, Opera and VirtualBox are three examples where more up-to-date versions are provided from the organisations' repositories, particularly important for the first two with the browser being such an important attack vector.

So I would say: be careful and use your good judgement if you use sources that are not the distro's official repositories.

1 members found this post helpful.

The English language lives and breathes on the use of metaphors. In this case, the term "virus" was very useful when it was created vis-à-vis computers because it was a good description of the nature and propagation methods of these computer infections. The only problem nowadays is that "virus" has been taken to mean all malware. And, of course, the word "infection" is not purely biological e.g. "I hope it's just your laugh that is infectious".