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All of his technological miracles, along with a billion others sold by Apple's competitors, would be merely pretty receptacles were it not for Dennis Ritchie. It is to him that they owe their digital souls, the operating systems and programs which make them tick.

Homebrew is the easiest and most flexible way to install the UNIX tools Apple didn't include with OS X.

As a Linux user you’ll come to learn and love certain commands. Here I have posted the 25 top command line snippets.

If netcat was called the Swiss Army Knife of Network Connections, then I’d call lsof the Swiss Army Knife of Unix debugging.

This document presents a collection of common issues and useful tips for Linux system administration. Whether you're new to system administration or have been maintaining systems for some time, we hope these tips are helpful regardless of your background or choice in Linux distributions

UNetbootin allows you to create bootable Live USB drives for a variety of Linux distributions from Windows or Linux, without requiring you to burn a CD. You can either let it download one of the many distributions supported out-of-the-box for you, or supply your own Linux .iso file if you've already downloaded one or your preferred distribution isn't on the list.

Command-Line-Fu is the place to record those command-line gems that you return to again and again.

Netcat is often referred to as a “Swiss Army knife†utility, and for a good reason. Just like the multi-function usefulness of the venerable Swiss Army pocket knife, netcat’s functionality is as helpful. Some of its features include port scanning, transferring files, port listening and it can be used a backdoor

Unison is a file-synchronization tool for Unix and Windows. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on the same host), modified separately, and then brought up to date by propagating the changes in each replica to the other

Wikimedia's move to Ubuntu is part of an effort to simplify administration of the organization's 400 servers, which previously ran a mix of various versions of Red Hat and Fedora.

PuTTY is hands-down the best, free, and lightweight SSH client for Windows. I have provided list of 12 powerful PuTTY add-ons with screenshots, that will solve few shortcomings of the original PuTTY

This bash tutorial assumes no previous knowledge of bash scripting.As you will soon discover in this quick comprehensive bash scripting guide, learning the bash shell scripting is very easy task. Lets begin this bash scripting tutorial with a simple "Hello World" script.

In light of the new Windows flaws announced yesterday, I think it's time to reiterate a point I made a long time ago: It's time for Microsoft to dump Windows.

This paper is about the development of the C programming language, the influences on it, and the conditions under which it was created

This week's release of the Fedora 9 Linux distribution makes putting a full-fledged desktop on a portable USB thumb drive a three-click affair. Even better, you don't need Linux installed to create it, you can leave the data on your thumb drive untouched,

This document describes a method for generating automatic rotating "snapshot"-style backups on a Unix-based system, with specific examples drawn from the author's GNU/Linux experience. Snapshot backups are a feature of some high-end industrial file server

Shell-fu is a place for all those little command line goodies that you come across and then can never find again when you need them. Hopefully we'll end up with a comprehensive and easily usable resource for anyone working with the shell

Have you ever wanted SSH or telnet access to your system from an internet desert - from behind a strict firewall, from an internet cafe, or even from a mobile phone? Anyterm is a combination of a web page and a web server module that provides this access

lsof is the Linux/Unix über-tool. I use it most for getting network connection related information from a system, but that's just the beginning for this amazing and little-known application

Here is a quick way to drastically improve the security of your OpenSSH server installations. ( I prefer the combination approach with iptables as several comments indicate)