#linux
All articles tagged #linux — practical guides from production experience.
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66 posts tagged #linux · page 6 of 8
Check Disk Usage in Linux: du vs df Explained
Check disk usage in Linux using df and du — understand the difference, read the output correctly, and find what's filling your disk with real command examples.
How to Check CPU Usage in Linux: Real Command Examples
Check CPU usage in Linux using top, mpstat, ps, and vmstat — read per-core breakdown, identify CPU-hungry processes, and diagnose high load in production.
Cannot Connect to Server Linux: Step-by-Step Troubleshooting
Troubleshoot 'cannot connect to server' on Linux — diagnose connection refused, timeout, and network unreachable errors with a systematic step-by-step approach.
top Command Linux: Real-World Guide to CPU and Process Monitoring
Learn how to use the top command on Linux for production troubleshooting — reading CPU, load average, memory metrics, interpreting process states, and diagnosing high CPU and stuck processes in real incidents.
strace Tutorial: Debug Linux Processes Like a Senior Engineer
A practical strace tutorial for production debugging — trace system calls, diagnose hung processes, find missing files, and debug permission errors with real command examples and incident workflows.
ps Command Linux: The Engineer's Troubleshooting Guide
How to use the ps command on Linux to debug high CPU, memory leaks, zombie processes, and unresponsive services — with real production workflows, common mistakes, and a quick-reference cheat sheet.
Linux Security Hardening Guide: CIS Benchmarks for Production
Complete Linux security hardening guide using CIS benchmarks — Ubuntu, RHEL, and Windows Server. SSH hardening, auditd, filesystem restrictions, firewall configuration, and production pitfalls to avoid.
Linux Process States Explained: R, S, D, Z and What They Mean for Troubleshooting
A practical guide to Linux process states — R, S, D, Z, T — what each means, how to read them in ps and top, why D state can freeze a system, and how to handle zombie processes in production.
Linux Performance Troubleshooting: Complete Engineer's Guide
The complete guide to Linux performance troubleshooting — CPU, memory, disk I/O, process states, and network — with step-by-step workflows, real production scenarios, and links to deep-dive articles on every topic.