Unix is a multi-user, multi-tasking operating system that was initially developed by Bell Labs in the 1970s. Various similar operating systems that are POSIX compliant (ie compatible with Unix) have since been developed (POSIX is an abbreviation for Portable Operating System Interface for UNIX). These include the following: the BSD family (OpenBSD, FreeBSD, NetBSD, Mac OS/X), Solaris, IRIX, AIX, SunOS, UnixWare, OpenServer and Linux.
Software written for POSIX compliant operating systems is generally able to be compiled for all POSIX platforms with little or no platform-specific changes. This makes the commands and utilities available for this extended family of operating systems very similar, and there are few differences between administering them.
The articles in this section are about useful command line utilities and commonly used application software on POSIX compliant operating systems. For Mac OSX specific articles see my OSX section.
Vim or VI Improved is a powerful open-source text editor used primarily for writing and editing text. Essentially, Vim is a text editor found in Unix and Linux based systems, and it’s also one of the oldest and stable text editors there are. One of the basic steps to learn is how to use Vim’s …
If you’re still new to Linux’s command line and want to learn basic commands, you’ve come to the right place. If you’re looking for different ways on how to remove a directory in Linux, you’re in the right place. Before we hop in, there are a few things you should understand first. Before We Begin …
Setting a remote connection between a client and server can be dangerous without first setting proper security measures. A secure connection is vital when managing your server and transferring files without the risk of compromising any sensitive information. That’s why enabling Secure Shell (SSH) is crucial to keeping your files, connection, and server activity secure …
Having a management system for installing python-based software can be useful. This makes it easier to navigate through python-based applications and packages. This is why most users find Pip convenient to have to manage their Python libraries. The installation steps are simple and shouldn’t take you long! Below, I’ll guide you on how to install pip and how …
Decision making is at the heart of computer programming. Which is why conditional statements play a crucial role in the programming language. It allows you to test whether conditions in your program are true or not. To execute the program, you need to work with bash and shell scripting. In this guide, I’ll teach you …
A symbolic link is a special file that provides Linux users with a reference to another file or directory. We also refer symbolic links as a soft link or symlink. Something Here In this guide, we’ll teach you how to create symbolic links using the ln command. Types of Symbolic Links Before we dive into …