The Linux Shell

Now    that    we    have    the    legalities    out    of    the    way,    let    us    now    talk    about    the    shell    of the    Linux    operating    system.    So    what    is    a    shell?    The    shell    of    an    operating    system    is the     screen     that     you     use     to     interact     with     the     operating     system.   … Read more

A brief history of Kali Linux

Kali Linux (Kali) is a Linux distribution system that was developed with a focus on the penetration testing task. Previously, Kali Linux was known as BackTrack, which itself is a merger between three different live Linux penetration testing distributions: IWHAX, WHOPPIX, and Auditor. BackTrack is one of the most famous Linux distribution systems, as can … Read more

LinuxLive USB Creator

;:LinuxLive USB Creator is a free and open-source software for Windows. It will help you in your journey of discovery with Linux. For you, LiLi creates portable, bootable and virtualized USB stick running Linux. Not only for geeks LiLi is designed to be used by both beginners and geeks. If you are a beginner, LiLi … Read more

Firewalls

Firewalls A machine connected to the Internet that isn’t behind a firewall is a disaster waiting to happen. And you won’t have to wait long. A recent study by the Internet Storm Center has shown that unpatched Windows computers only lasted 20 minutes before they were infected by some malware. If you’re running Linux, you’re … Read more

History of Supercomputers

Many of us are familiar with computers. You’re likely using one now to read this blog post as devices such as laptops, smartphones and tablets are essentially the same underlying computing technology. Supercomputers, on the other hand, are somewhat esoteric as they’re often thought of as hulking, costly, energy-sucking machines developed, by and large, for … Read more

shell variables

In this post we learn to manage environment variables in the shell. These variables are often needed by applications. $ dollar sign Another important character interpreted by the shell is the dollar sign $. The shell will look for an environment variable named like the string following the dollar sign and replace it with the … Read more

Linux history

This post briefly tells the history of Unix and where Linux fits in.   1969 All modern operating systems have their roots in 1969 when Dennis Ritchie and KenThompson developed the C language and the Unix operating system at AT&T Bell Labs.They shared their source code (yes, there was open source back in the Seventies) … Read more