A shell provides users with an interface to the Unix system. It gathers input and executes programs based on that input. When a program finishes executing, it displays that program's output. A shell ...

This document is written in troff, using the ms macros plus some extras included with it. A Makefile is included that will build the document on most Unix systems. The sources are maintained using the ...

Ever wondered why programming in Bash is so difficult? Bash employs the same constructs as traditional programming languages; however, under the hood, the logic is rather different. The Bourne-Again ...

If you're not yet comfortable with writing scripts on Unix and Linux systems, this post might get you off to a healthy start. Creating a script on a Unix or Linux system can be dead easy or ...

UNIX is a powerful multi-user operating system (OS) that defined how we do computing for more than 40 years. It provided a lot of features and abstractions that we take for granted today. This ...

One particular frustration with the UNIX shell is the inability to easily schedule multiple, concurrent tasks that fully utilize CPU cores presented on modern systems. The example of focus in this ...

Unix and Linux shells are very powerful and extremely customizable. These humble text-based interfaces have a surprising amount of power. For one thing, they’re fully-fledged programming languages.

What is the Unix Shell? The structure of a computer’s operating system is described using the metaphor of a nut. The innermost program layer is the Kernel, which connects the hardware and the software ...