Bhagwad Park

In all my years as a Linux admin, vim is the tool I’ve used most often. It’s the default text editor in Linux systems, and you’ll usually be working with file contents, from config files to log files, scripts, and more. If you work with multiple servers, then many of the config files will remain […]

We often talk about the “sed” Linux tool on the NameHero blog because it is versatile and useful. Our tutorial on how to delete lines in sed shows you how to install sed and get started. In this article, we talk about using sed to replace text in files. Sed is uniquely suited for this […]

In Linux, Tmux stands for “Terminal Multiplexer”, and we use it to run multiple commands from a single SSH session. Using tmux, we can have several windows open at the same time, running different tasks, and borrow some of the useful multi-tasking features from Windows. We’d written an earlier article on the basics of using […]

In server environments, we often need to replicate folders across locations. For example, one super common use case is backup, where you periodically backup many log files. Another example is where you need to move the source code of an entire project from one server to another. In such situations, you need to mimic the […]

Curl is one of the most ubiquitous tools on Linux. It comes pre-installed with every flavor, and we often use it in demos or for downloading packages from the Internet. By design, though, the tool doesn’t automatically follow redirects. There are reasons for this behavior, having to do with security. Phishing attacks these days rely […]

In the backend, Linux systems use a tool called iptables to manage firewall rules. This tool is comprehensive and powerful, but unfortunately, confusing as hell. If we wanted to perform the same operation in iptables that we want to perform in ufw, it’s a lot more complicated, even though ufw is just a wrapper around […]

A service on Linux is a process that runs in the background that you can start, stop, enable, and disable. For modern operating systems, we interact with them using the “systemctl” tool, which interfaces with the systemd subsystem, which in turn manages the “init” system and service manager. As Linux admins, we don’t need to […]

In an earlier post, we discussed the basics of zsh, what it is, and how to get started. Today we’ll look at syntax highlighting in zsh, its meaning, and how to implement it. I’ll also explain why it doesn’t work well with bash, even though we can get it to work in a “hacky” way. […]

In Linux, we often need to feed one command’s output into another. The most well-known example is grep, which uses the pipe (|) operator to receive input and then search that input for a specific pattern. I’ve written earlier about using the pipe command with Linux, and we’re all familiar with how it works. Unfortunately, […]