In shell-speak, globbing is what the shell does when you use a wildcard in a command (e.g. * or ?). Globbing is matching the wildcard pattern and returning the file and directory names that match and then replacing the wildcard pattern in the command with the matched items. Bash version 4.0 adds a new globbing option called globstar which treats the pattern ** differently when it's set.

It's hard to write a bash script of much import without using a pipe or two. Named pipes, on the other hand, are much rarer.

This guide delves into the intricacies of Disk Partitioning and Logical Volume Management (LVM), equipping you with the knowledge to optimize your Linux system's storage.

This guide will walk you through the process of crafting your portable operating system, ensuring you have all the tools and knowledge at your disposal.

As a Debian user, you may find yourself needing to restart your system from time to time. Whether it's for implementing new configurations, recovering from temporary glitches, or installing updates that require a reboot, restarting your system is an essential skill to have. While Debian provides a graphical user interface (GUI) option for rebooting, many users prefer the precision and convenience of the command line. In this article, we'll explore a comprehensive set of commands you can use to restart your Debian system from the command line.

With the latest releases systemd has implemented some interesting features relating to security, especially sandboxing. In this article we are going to show step-by-step how to strengthen services using specific directives, and how to check them with the provided systemd suite.

At times, we need to write shell scripts that are interactive and user executing them need to monitor the progress. For such requirements, we can implement a simple progress bar that gives an idea about how much task has been completed by the script or how much the script has executed. To implement it, we only need to use the “echo” command with the following options and a backslash-escaped character.

I've always been a fan of putting aftermarket firmware on consumer-grade routers. Whether it's DD-WRT, Tomato, OpenWRT or whatever your favorite flavor of "better than stock" firmware might be, it just makes economic sense. Unfortunately, my routing needs have surpassed my trusty Linksys router.

One amazing thing about Linux is that the same code base is used for a different range of computing systems, from supercomputers to very tiny embedded devices. If you stop for a second and think about it, Linux is probably the only OS that has a unified code base.

iptables is the user-space tool for configuring firewall rules in the Linux kernel. It is actually a part of the larger netfilter framework. Perhaps because iptables is the most visible part of the netfilter framework, the framework is commonly referred to collectively as iptables. iptables has been the Linux firewall solution since the 2.4 kernel.