i have switched from window to linux but i have little knowledge about linux. i installed linux 6 redhat(desktop).
i can't even install gcc on linux.
i can't play videos and music on it.
please someone help me out.

You need to PAY for Redhat if you want to add packages, etc. If you want something similar and free (as in beer) then install CentOS.
jdk

If you want to play videos, you need to install Flash and video player like vlc.

If you're absolutely new to Linux, stop where you are. Red Hat Enterprise Linux is for SERVERS, and CentOS is as well. They're not really well suited for 'consumer' hardware, so things like bluetooth, wifi, video, etc., may not be well supported, if at all.

Load Fedora (if you want to remain within the Red Hat ecosystem), and I think you'll be much happier. It's geared more towards 'consumers' and newbies. Also, there is MUCH documentation on how to install codecs and software for playing MP3's and videos:
https://ask.fedoraproject.org/en/que...-on-fedora-20/

If you want to play music and videos, then none of the Red Hat family — CentOS, Fedora — are convenient for beginners. They don't give you the codecs for decoding media files, because they are patented in the USA and Red Hat doesn't want to be sued. They don't even tell you where to get them, just in case that causes legal trouble!

Install Linux Mint: the codecs are on the installation disk and the distro is intended to be easy for beginners, too.

the codec copyright MADNESS ( INSANE MADNESS !!!) also extends somewhat to OpenSUSE

SUSE is a German company
but in order to NOT run afoul of HOLLYWOOD and the Mpeg Licensing Authority
there is the UNDOCUMENTED!!!! reasons for the "packman" repo

now Ubuntu has paid the EXTORTION CASH and includes most multimedia

most linux OS's have NOT

While I totally disagree with the whole MPAA/DRM issues and the crap about the codecs not being installed, I personally don't care. It is so easy to install them, with such ample documentation and support for the different formats, the extra ten-minutes it might take to install them (LITERALLY one-click for openSUSE), is trivial.

While it's not a perfect solution, it DOES circumvent the issues about it being 'legal', and lets the user do what they want.

OK then, please inform us, the unwashed masses, where to get them? I have used SUSE for many years, and as a retired IT manager/business developer, I am not complete lost behind. 2-3 "upgrades" ago, I could throw whatever multimedia at my SUSE installation, and it worked. Now most things don't work, and there is absolutely no logic in what works and what doesn't. WMW is impossible in any program, KDE or GNU, but the WMW from my own video camera works fine - image and sound. Some MP4 works, some dont and I could name all the common formats.

If I found an older SUSE on the net, about 2013 and installed that, would the codecs work then, or have they been removed? Will they be removed first time I add fixes? H.264 was in the package, and that is close to impossible to get now.

Some Linux users seen to interpret "free systems" as "Free beer", while I see it more as "Free Speech". I wouldn't mind paying for it if patented necessary SW was included. We all want to get paid for what we do, but a piece of SW distributed in multi-millions, should be charged only a few dollars.

Welcome to the forum.

First a bit of netiquette. Always start your own thread to ask a question, and certainly don't resurrect one from 3 years ago. A new thread will be listed as "zero replies" and so get the attention of busy members who just check that.

SUSE, like Red Hat, is owned by a US company, so they too have to comply with the silly US patent laws. This means that they won't supply the patented codecs or even tell you where to get them. But a search for "opensuse media codecs" found the solution:
http://opensuse-guide.org/codecs.php

1 members found this post helpful.

As said in my other reply, and re-iterated by DavidMcCann, codecs for openSUSE are literally one-click, for Leap, Tumbleweed, and 13.2. Have had ZERO problems with any type of file on new installations by installing that meta-package. Found easily with a Google search.

As DavidMcCann pointed out, re-opening a three year old thread with your own question isn't a good thing, nor is the tone in your post. We're happy to help, but please read the "Question Guidelines" link in my posting signature, along with the "How to ask a smart question" link.