Where Innovation Meets Automation
“Address already in use” tells you a port is taken. It doesn’t tell you by what. Finding what’s using a port on Linux is a three-command workflow, not one magic incantation — and two of those three commands have a… Read moreFind What’s Using a Port on Linux (lsof, ss, ps)
Linux file permissions come down to three numbers and a handful of special bits, but the numbers trip people up because the math isn’t explained where you’d actually see it — on the command line. chmod 755, chmod 2775, umask… Read moreLinux File Permissions Explained: chmod, chown, and umask
Looking for the perfect command-line fuzzy finder? Meet fzf, the fastest and most powerful fuzzy search tool that’s revolutionizing terminal workflows. As a DevOps engineer, I rely on this fuzzy finder daily to search through files, commands, and processes with… Read moreWhat is fzf? The Ultimate Command-Line Fuzzy
Parsing and manipulating JSON and YAML files is a common task in DevOps and scripting. Tools like jq for JSON and yq for YAML make it easier to handle these formats in shell scripts. Below is a guide on how… Read moreParsing JSON and YAML Files with jq and yq in Shell Scripts
Understanding file permissions is crucial for system administration and security. The Access Control List (ACL) provides a more fine-grained permission model compared to traditional Unix file permissions. Let’s dive into how you can use ACLs to set specific user permissions…. Read moreAccess Control List (ACL): A Guide for File Permissions
Netcat (nc) is a versatile networking utility for reading from and writing to network connections using TCP or UDP. Below are some practical examples showcasing its capabilities. 1. Test if a Remote TCP Port is Open To check if a… Read moreLinux Netcat Command Examples
Introduction:Linux is a powerful operating system that relies heavily on command-line interactions. For beginners and system administrators alike, mastering essential commands can significantly boost productivity and system understanding. This comprehensive guide walks you through crucial Linux commands, complete with explanations… Read moreEssential Linux Commands: Beginner to Admin Guide
Log rotation is a crucial task for managing application logs efficiently and preventing them from consuming excessive disk space. If your application logs are stored in a different location, you can still perform log rotation using the logrotate tool. In… Read moreLog Rotation for Application Logs in Linux
sed and awk solve different problems, even though most “comparison” posts treat them as interchangeable. sed is a line-based stream editor: it reads input one line at a time and applies text transformations to it, with no concept of columns… Read moresed vs awk: When to Use Which (With Real Examples)