linux commands
How to Use free Command in Linux: Monitor Memory the Right Way
Learn how to use the free command in Linux to monitor memory usage, interpret available vs used memory, and avoid common mistakes. Practical examples for sysadmins.
How to Use du Command in Linux: Find What’s Eating Your Disk Space
Master the du command in Linux to analyze disk usage, find large directories, and free up space. Includes practical examples and troubleshooting tips.
How to Use ln Command in Linux: Create Symbolic Links the Right Way
Learn how to use the ln command in Linux to create symbolic and hard links. Master link types, avoid common mistakes, and manage file system links like a pro.
How to Use cut Command in Linux: The Text Extraction Tool Every Admin Needs
Master the Linux cut command to extract fields, columns, and characters from files. Learn syntax, practical examples, common mistakes, and when to use cut vs awk.
How to Use df Command in Linux: The Disk Space Tool Every Admin Needs
Master the df command in Linux to monitor disk space, understand filesystem usage, troubleshoot storage issues, and prevent system failures with practical examples.
How to Use which Command in Linux: Find Executables the Right Way
Learn the Linux which command to find executable locations in PATH. Discover when to use which vs type vs whereis, troubleshoot conflicts with -a, and master command resolution.
How to Use umask Command in Linux: Control Default File Permissions
Learn how to use the umask command in Linux to set secure default file permissions. Includes real-world examples, octal notation explained, and security best practices for 2025.
How to Use the head Command in Linux: The Quick File Preview Tool Every Admin Needs
Learn how to use the head command in Linux to quickly preview files, analyze logs, and build powerful pipelines. Practical examples for sysadmins in 2025.
How to Use ps Command in Linux: The Process Tool Every Admin Needs
Learn how to use the ps command in Linux with real-world examples. Master process monitoring, troubleshooting, and system administration with this essential tool.
How to Use Sort Command in Linux: The Text Tool Every Admin Uses Daily
I’ve lost count of how many times the sort command has pulled me out of a tight spot. Whether I’m ...
How to Use Zip and Unzip Commands in Linux: The Complete Guide
Master the zip and unzip commands in Linux with practical examples. Learn compression, encryption, cross-platform sharing, and troubleshooting tips.
Apt Update vs Apt Upgrade: What’s the Difference?
Learn the crucial difference between apt update and apt upgrade commands. Discover why running them in the right order matters for Linux system security.
How to Use the Watch Command in Linux: Monitor Commands in Real Time
Learn how to use the watch command in Linux to monitor commands in real time. Real-world examples, essential options, and practical tips from 10+ years of sysadmin work.
How to Use curl Command in Linux: The Essential Tool for Every Sysadmin
Master the curl command in Linux with real-world examples for API testing, file downloads, and troubleshooting. Complete guide with practical use cases for 2025.
How to Use sed in Linux: The Text Processing Tool Every Sysadmin Needs
Master the sed command in Linux with practical examples. Learn text processing, find-and-replace operations, and real-world use cases that every sysadmin needs.
How to Use lsof Command in Linux: The Troubleshooting Tool That Saves Careers
Master the lsof command in Linux with real-world examples. Learn to troubleshoot network connections, find deleted files eating disk space, and solve production issues fast.
How to Check Hostname in Linux: The Command Every Admin Uses Daily
Learn how to check hostname in Linux using hostname, hostnamectl, and configuration files. Master FQDN lookups and hostname management for better server administration.
How to Use Traceroute in Linux: The Network Diagnostic Tool Every Admin Needs
I still remember the first time a user complained that “the internet was slow.” Fresh out of college, armed with ...
How to Use Rsync in Linux: The File Transfer Tool Every Sysadmin Relies On
Learn how to use rsync in Linux with this complete guide. Master file synchronization, remote transfers, backups, and avoid common mistakes that cost hours.
How to Check Network Interface in Linux: The Complete Guide
Master Linux network interfaces with ip, nmcli, and ethtool commands. Learn to troubleshoot connectivity issues and understand network interface names.
