FFMPEG is an open source application and developed under Linux  that allows you to convert video and audio files easily between a variety of different formats. It supports most industry-standard codec and can convert from one file format to another quickly and easily.It includes libavcodec, a leading audio/video codec  library.  FFmpeg is, but it can compile under most Operating Systems, including Windows.   Download the detailed FFMPEG installation guide  in  CentOS as pdf Download Now  You can use this powerfull tool using any scripting language server side execute functions once you installed in your server.    In php       shell_exec(“command, parameters”); the following flow chart explain you how it works with php

It's easy to argue that Ubuntu's success is because there's an unlimited supply of investment from its super-rich parent company, Canonical. But Linux isn't like any ordinary software stack. People aren't forced to use it, and we can all choose something else at no extra cost. Ubuntu has to be doing something right. Ubuntu's biggest, and earliest, success has been in marketing itself. It's become a recognisable brand, not only in the Linux community, but in the wider non-technical world. For some, the word 'Ubuntu' has become synonymous with Linux. And that's a vital trick. These are people who would never have considered Linux as a viable alternative to their proprietary operating systems before the advent of Ubuntu. Right from the outset,   Ubuntu has been marketed as 'Linux for Human Beings', rather than the stereotypical anti-social, bearded geeks of Hollywood movies. (It also helps if you've got a charismatic spaceman to run the show and you can afford to send out CDs for free.)

There are three reasons why Linux isn't succeeding on the desktop, and none of them are to do with missing functionality, using the command line or the politics of free software. The first is that there's too much momentum behind Microsoft Windows and too many preconceptions about the alternatives. Linux is perceived as having too much of a learning curve for relatively few advantages and an unknown heritage. Migrating big business to a Linux desktop is akin to turning a T1-class supertanker around mid-Atlantic. The opposite direction may look brighter, but it's easier to chug onwards into the storm. You only have to look at the number of people clinging to Microsoft's venerable Office suite to see this point clearly. 

If you have decided to enable a SSL ( Secure Sockets Layer ) protocol on your web server it may be because you would like to extend its functionality to achieve an integrity and confidentiality for a data transferred on unsecured networks. However, this protocol with the combination of PKI ( Public Key Infrastructure ) principles can also along the side of integrity and confidentiality provide authentication between both sides involved in the client-server communication. One-way SSL authentication allows a SSL client to confirm an identity of SSL server. However, SSL server cannot confirm an identity of SSL client. This kind of SSL authentication is used by HTTPS protocol and many public servers around the world this way provides services such as webmail or Internet banking. The SSL client authentication is done on a “application layer” of OSI model by the client entering an authentication credentials such as username and password or by using a grid card. Two-way SSL authentication also known as mutual SSL authentication allows SSL client to confirm an identity of SSL server and SSL server can also confirm an identity of the SSL client. This type of authentication is called client authentication because SSL client shows its identity to SSL server with a use of the client certificate. Client authentication with a certificate can add yet another layer of security or even completely replace authentication method such us user name and password. In this document, we will discuss configuration of both types of SSL authentication one-way SSL authentication and two-way SSL authentication.

Knoppix can be used to back up files easily from hard drives with inaccessible operating systems. To quickly and more safely use Linux software the Live CD can be used instead of installing another OS.

Linux is a hacker’s dream computer operating system. It supports tons of tools and utilities for cracking passwords, scanning network vulnerabilities, and detecting possible intrusions. I have here a collection of 10 of the best hacking and security software tools for Linux. Please always keep in mind that these tools are not meant to harm, but to protect.

The SCP protocol, which runs on port 22, is similar to the BSD rcp protocol, however unlike rcp, data is encrypted during transfer, to avoid potential packet sniffers extracting usable information from the data packets. The protocol itself does not provide authentication and security; it relies on the underlying protocol, SSH, to provide these features. 

We will show you some of the useful productivity enhancements that Compiz has to offer, such as multiple desktops (workspaces), moving windows between desktops, expo (preview and choose from all your desktops), resizeable window previews, and scale (display and choose from all your open windows at once).

Slackware doesn't try to pre-empt you – it doesn't attempt to guess what you want to do and what you're using the installation for. You might be running it as a server or router, in which case the default boot-up mode (to a text login) is perfect. Chances are you'll want to use it in graphical mode, though, so follow these instructions to get it working to your liking.

Your step by step guide to installing Slackware 12.2 Slackware requires at least a 486 CPU and 48MB of RAM, so it's useful for reviving dusty old machines, but if you want to use a modern desktop we recommend a 1GHz CPU and 256MB RAM. You can obtain the distro on CD or DVD from www.slackware.com.