This article explains the kernel‑level mechanics of file deletion on Linux, compares hard and soft links, shows how processes keep deleted files open, and provides step‑by‑step guides for using extundelete, testdisk, photorec, debugfs, XFS tools, snapshot strategies, scripts and preventive measures to reliably restore lost data.
This comprehensive guide walks you through Linux disk space shortage scenarios, prerequisites, a quick checklist, step‑by‑step LVM and partition expansion, I/O scheduler tuning, fio benchmarking, kernel parameter optimization, Prometheus monitoring, security hardening, backup strategies, troubleshooting, and best‑practice recommendations for reliable disk management and performance.
This article explains Claude Code Hooks, detailing the 16 lifecycle events, four hook types, and six practical scenarios—from task‑completion notifications to file protection—showing how deterministic hooks can automate workflows, enforce policies, and improve reliability when using Claude Code for AI‑assisted development.
This guide introduces the newly released Obsidian CLI, showing how to configure it and leverage seven automation scenarios—from instant idea capture and Git workflow integration to meeting timers, AI assistant linking, daily reviews, tmux shortcuts, and fuzzy file search—enabling rapid, command‑line‑driven knowledge management.
This guide walks Linux administrators through a full‑cycle intrusion detection and emergency response process, covering metric monitoring, log analysis, file integrity checks, attack confirmation, staged remediation, preventive hardening, and useful automation scripts to keep servers secure.
This article presents a fully automated, zero‑downtime deployment solution that integrates Jenkins pipelines with a set of shell scripts to handle code checkout, image building, seamless container switching, health checks, rollback, disk monitoring, and resource cleanup, providing a reliable end‑to‑end workflow for fast and stable releases.
An operations engineer’s step‑by‑step guide walks through identifying network failure symptoms, using ping, traceroute, port checks, DNS validation, advanced interface and firewall analysis, practical case studies, automation scripts, best‑practice SOPs, and preventive checklists to quickly pinpoint and resolve Linux network issues.
This comprehensive guide walks you through Linux system performance monitoring using tools like top, htop, vmstat, iostat, sar, netstat, ps, and free, explains each metric, provides practical shell scripts for real‑time analysis, alerts, and detailed tuning strategies for CPU, memory, disk, and network.
This comprehensive guide explains how to safely expand a Kafka cluster without data loss by covering applicable scenarios, pre‑conditions, anti‑pattern warnings, environment matrices, a detailed checklist, step‑by‑step Linux commands for broker preparation, partition‑rebalancing plan generation, throttled execution, real‑time monitoring, verification, rollback procedures, backup strategies, performance testing, common troubleshooting, FAQs and best‑practice scripts, all illustrated with code snippets and practical examples.
Learn how to transform a vulnerable MySQL 8 instance into a militarized, audit‑ready database in just half an hour by applying six ready‑to‑run shell and SQL scripts that disable high‑risk accounts, enable enterprise audit logging, enforce SSL, prune privileges, rotate root passwords, and generate compliance reports.
This guide presents a comprehensive network security shell script library, outlining modular design principles, a categorized inventory of over 180 scripts for reconnaissance, vulnerability scanning, monitoring, incident response, credential management, automation, and utility tools, along with practical build strategies and usage tips for secure, portable deployments.
When a Linux server spikes to 90% CPU, memory pressure grows, and database connections exhaust, this guide walks you through a systematic methodology, essential tools, real‑world case studies, and practical optimizations to quickly locate and resolve performance bottlenecks.
This guide walks through a complete set of Bash scripts for building, starting, stopping, rolling back, and monitoring a Go backend service, explains signal handling in Go, and provides a curated list of useful open‑source Go projects and libraries.
This comprehensive guide shares a seasoned sysadmin's proven Linux performance monitoring and tuning methods—including CPU, memory, disk I/O, and network optimization, real‑world case studies, and ready‑to‑run shell scripts—so you can transform from a firefighting engineer into a performance expert.
This comprehensive guide walks you through Linux system performance monitoring, covering essential tools such as top, htop, vmstat, iostat, and sar, and provides detailed explanations, command examples, scripts, and practical optimization strategies for CPU, memory, disk, and network resources.
This guide presents eight practical MongoDB shell scripts—covering database size analysis, connection monitoring, long‑running query termination, table‑scan detection, replica‑set health checks, and slow‑query profiling—plus usage tips and cautions for reliable administration.
This guide introduces four popular MySQL performance‑tuning utilities—mysqltuner.pl, tuning‑primer.sh, pt‑variable‑advisor, and pt‑query‑digest—provides download commands, usage examples, and detailed tips for interpreting their diagnostic reports to improve database configuration and query efficiency.
This guide explains how Windows and Linux handle line‑ending characters differently, the visual and functional problems caused by mismatched formats, and provides practical methods and tools to view and convert files so scripts run correctly across both operating systems.
This comprehensive guide covers Linux operations interview topics, including the definition of ops, game‑ops roles, server management techniques, RAID levels, load‑balancing tools (LVS, Nginx, HAProxy), middleware, MySQL troubleshooting, backup solutions, health‑check configuration, common networking commands, virus removal, TCP/IP model, Nginx modules, log retention, system optimization, and useful command‑line shortcuts, all presented with clear explanations and practical examples.
This article introduces two open‑source script collections—dbm_lite for Oracle database administration and mysql_mgr_test for rapid MySQL Group Replication deployment—detailing their features, supported platforms, usage instructions, and how to obtain them from GitHub.
This guide explains how to configure a Windows-based testing environment using Cygwin, install necessary tools, create shortcuts, access Windows drives, and execute shell scripts to record videos, extract frames, compare images, and calculate average response times for Android applications.
