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system-administration

787 articles · Page 2 of 8
MaGe Linux Operations
MaGe Linux Operations
Jul 16, 2025 · Operations

Mastering the Linux Directory Hierarchy: A Complete Guide for Sysadmins

This comprehensive guide explores the Linux Filesystem Hierarchy Standard (FHS), detailing each standard directory, its purpose, common commands, best practices, security considerations, mounting strategies, performance tuning, and troubleshooting techniques to help system administrators efficiently manage and maintain Linux systems.

Directory HierarchyFilesystemsystem-administration
0 likes · 33 min read
Mastering the Linux Directory Hierarchy: A Complete Guide for Sysadmins
Raymond Ops
Raymond Ops
Jul 14, 2025 · Operations

Master Chrony: Complete Guide to Install and Configure Time Synchronization on Linux

This article provides a comprehensive walkthrough of Chrony, a high‑precision time synchronization service, covering its features, file structure, configuration options, installation steps across major Linux distributions, network setup, firewall and SELinux adjustments, timezone configuration, and scripts for both server and client deployment, enabling you to establish a reliable private NTP server.

LinuxNTPchrony
0 likes · 31 min read
Master Chrony: Complete Guide to Install and Configure Time Synchronization on Linux
Raymond Ops
Raymond Ops
Jul 14, 2025 · Operations

Master RAID 10: Step‑by‑Step Setup, Management, and Recovery on Linux

This guide explains RAID fundamentals, compares RAID levels, and provides a complete Linux‑based RAID10 tutorial—including installation of mdadm, array creation, mounting, data operations, disk failure handling, rebuilding, and removal—so administrators can confidently manage redundant storage.

RAIDRAID10Software RAID
0 likes · 14 min read
Master RAID 10: Step‑by‑Step Setup, Management, and Recovery on Linux
IT Services Circle
IT Services Circle
Jul 13, 2025 · Operations

How to Cleanly Remove Built‑In Microsoft Store Apps in Windows 11 25H2 with Group Policy

Microsoft’s Windows 11 25H2 preview introduces a built‑in Group Policy that lets administrators automatically uninstall unwanted default Store apps—such as Sticky Notes and Xbox—by creating registry entries, while the open‑source NAppClean tool offers even broader app removal capabilities for enterprise deployments.

Windows 11appxgroup-policy
0 likes · 5 min read
How to Cleanly Remove Built‑In Microsoft Store Apps in Windows 11 25H2 with Group Policy
Liangxu Linux
Liangxu Linux
Jul 13, 2025 · Operations

Master LVM on Linux: Create, Expand, and Shrink Logical Volumes Step‑by‑Step

This guide explains the fundamentals of Linux Logical Volume Manager (LVM), covering key concepts such as physical volumes, volume groups, and logical volumes, and provides detailed, command‑line instructions for creating, extending, reducing, and deleting logical volumes on a VMware virtual machine.

LVMLogical Volume Managerstorage
0 likes · 10 min read
Master LVM on Linux: Create, Expand, and Shrink Logical Volumes Step‑by‑Step
Raymond Ops
Raymond Ops
Jul 5, 2025 · Operations

Master Linux User Management: Create, Modify, Secure, and Elevate Users Efficiently

This guide walks you through Linux user fundamentals, covering user definitions, essential commands (useradd, usermod, userdel), configuration files, password policies, privilege escalation with su and sudo, and comprehensive group management, providing practical examples and code snippets for effective system administration.

Linuxgroup-managementsudo
0 likes · 25 min read
Master Linux User Management: Create, Modify, Secure, and Elevate Users Efficiently
Liangxu Linux
Liangxu Linux
Jul 5, 2025 · Operations

Step‑by‑Step Guide to Installing and Configuring Nagios on CentOS 7

This tutorial walks through preparing a CentOS 7 virtual machine, configuring networking, setting up required packages, compiling and installing Nagios Core, adding the Nagios user and Apache integration, configuring the firewall, and finally installing and enabling Nagios plugins for full monitoring capabilities.

InstallationMonitoringnagios
0 likes · 8 min read
Step‑by‑Step Guide to Installing and Configuring Nagios on CentOS 7
Ops Community
Ops Community
Jul 4, 2025 · Information Security

Master Enterprise Linux Security Hardening: From Basics to Advanced

This comprehensive guide walks you through essential Linux security hardening steps—including system updates, service disabling, password policies, SSH configuration, firewall rules, intrusion detection, file integrity monitoring, log auditing, automation scripts, and emergency response—to help enterprises build a resilient and continuously protected infrastructure.

AutomationIntrusion DetectionLinux
0 likes · 9 min read
Master Enterprise Linux Security Hardening: From Basics to Advanced
Open Source Linux
Open Source Linux
Jul 3, 2025 · Operations

Master LVM: Concepts, Commands, and Step‑by‑Step Setup Guide

This article provides a comprehensive overview of Logical Volume Manager (LVM), explains its core concepts such as physical volumes, volume groups, logical volumes and physical extents, outlines its main advantages, and walks through essential management commands with practical examples for creating, extending and removing LVM components.

LVMLinux storageLogical Volume Manager
0 likes · 10 min read
Master LVM: Concepts, Commands, and Step‑by‑Step Setup Guide
Raymond Ops
Raymond Ops
Jul 2, 2025 · Operations

Master Linux Process Management: From Basics to Advanced Monitoring

This comprehensive guide explains what a process is, how it differs from a program, its lifecycle, and provides detailed instructions for monitoring process status with ps and top, using tools like vmstat, iostat, dstat, managing processes with kill, killall, pkill, background jobs, screen, adjusting priorities, and interpreting system load averages.

LinuxMonitoringperformance
0 likes · 29 min read
Master Linux Process Management: From Basics to Advanced Monitoring
MaGe Linux Operations
MaGe Linux Operations
Jul 2, 2025 · Operations

Master BIND DNS Server: Installation, Configuration, and Testing Guide

This comprehensive guide walks you through installing BIND on Linux, configuring primary and secondary DNS zones, setting up forward and reverse lookups, managing zone files, and testing resolution on both Windows and Linux clients, providing step‑by‑step commands and configuration examples.

BINDDNSsystem-administration
0 likes · 16 min read
Master BIND DNS Server: Installation, Configuration, and Testing Guide
Ops Community
Ops Community
Jul 1, 2025 · Operations

Master LVM: From Core Concepts to Practical Commands and Setup

This guide explains the fundamentals of Logical Volume Manager (LVM), its key components, major advantages, reasons to adopt it, essential management commands with examples, and step‑by‑step procedures for creating physical volumes, volume groups, logical volumes, and mounting them for real‑world Linux storage solutions.

LVMLVM commandsLinux storage
0 likes · 9 min read
Master LVM: From Core Concepts to Practical Commands and Setup
Open Source Linux
Open Source Linux
Jun 30, 2025 · Operations

Master su and sudo: Switch Users Safely and Harness Linux Privileges

This guide explains the differences between the su and sudo commands, shows how to create and manage users, demonstrates login-shell versus non‑login-shell switching, covers the -c option for one‑off commands, and compares security implications of each method in Linux environments.

Linuxcommand-linesu
0 likes · 11 min read
Master su and sudo: Switch Users Safely and Harness Linux Privileges
MaGe Linux Operations
MaGe Linux Operations
Jun 29, 2025 · Operations

Master Linux Networking: Essential Commands Every Sysadmin Should Know

This comprehensive guide covers the most commonly used Linux networking commands—including ifconfig, ip, ping, traceroute, nslookup, dig, netstat, ss, tcpdump, arp, and nmap—explaining their syntax, options, and practical examples to help administrators configure interfaces, diagnose connectivity, and secure their networks.

Commandssystem-administration
0 likes · 28 min read
Master Linux Networking: Essential Commands Every Sysadmin Should Know
Raymond Ops
Raymond Ops
Jun 26, 2025 · Operations

Master LVM: Create, Resize, and Delete Logical Volumes on Linux

This tutorial walks through preparing physical disks, creating physical volumes, a volume group, and multiple logical volumes, formatting and mounting them, dynamically expanding storage, and safely removing LVM components on a Linux system.

FilesystemLVMLinux
0 likes · 14 min read
Master LVM: Create, Resize, and Delete Logical Volumes on Linux
Raymond Ops
Raymond Ops
Jun 16, 2025 · Operations

Step‑by‑Step Guide to Install and Configure Samba on CentOS 7

This tutorial walks through installing Samba on CentOS 7, creating system and Samba users, setting up a shared directory, configuring smb.conf, starting services, and then configuring a client to connect, mount, and auto‑mount the share using CIFS, providing a complete end‑to‑end solution.

CIFSCentOSLinux
0 likes · 6 min read
Step‑by‑Step Guide to Install and Configure Samba on CentOS 7
MaGe Linux Operations
MaGe Linux Operations
Jun 14, 2025 · Operations

Master Linux Disk Partitioning and Mounting: A Step‑by‑Step Guide

This article explains the principles of Linux disk partitioning, shows how to list and inspect block devices, walk through creating, formatting, temporarily and permanently mounting partitions, and covers unmounting and deleting partitions with practical command examples and safety tips.

Disk Partitioningfdisklsblk
0 likes · 9 min read
Master Linux Disk Partitioning and Mounting: A Step‑by‑Step Guide
Lin is Dream
Lin is Dream
Jun 12, 2025 · Information Security

How to Securely Set Up a Restricted SFTP Account on Linux Using chroot

Learn step‑by‑step how to create a dedicated Linux SFTP user with chroot confinement, configure group permissions, set up a secure upload directory, adjust SSH settings, and restart the service to ensure the account can only upload files without shell access, following the principle of least privilege.

LinuxSFTPchroot
0 likes · 7 min read
How to Securely Set Up a Restricted SFTP Account on Linux Using chroot
dbaplus Community
dbaplus Community
Jun 9, 2025 · Operations

20 High‑Risk Ops Tricks That Actually Boost Efficiency (And How to Do Them Safely)

Drawing on a decade of ops experience, this article reveals twenty seemingly dangerous yet highly efficient operational practices—from production debugging and bulk server changes to database hacks, network security shortcuts, system tweaks, disaster‑recovery drills, and cloud‑native tricks—while outlining their risks and concrete mitigation steps.

Risk Managementsecuritysystem-administration
0 likes · 12 min read
20 High‑Risk Ops Tricks That Actually Boost Efficiency (And How to Do Them Safely)
Raymond Ops
Raymond Ops
Jun 3, 2025 · Operations

Understanding Linux Inodes, File Operations, and Log Management

This article explains Linux inode table structure, how commands like ls, stat, cp, mv, and rm interact with inodes, compares hard and soft links, outlines common system log files and their formats, and demonstrates centralizing logs on a rsyslog server.

File SystemLinuxinode
0 likes · 9 min read
Understanding Linux Inodes, File Operations, and Log Management
Liangxu Linux
Liangxu Linux
Jun 2, 2025 · Operations

Master Linux Network Configuration: IP, Routes, Bonding and Diagnostic Tools

This guide walks through Linux network fundamentals—including hostname, IP address, netmask, gateway, DNS, interface status, temporary and permanent IP changes with ifconfig and ip, routing adjustments, bond interface setup, and diagnostic utilities like ethtool, ss, netstat, traceroute, nslookup, and tcpdump—providing step‑by‑step commands and examples for effective system administration.

BondingNetworkip
0 likes · 16 min read
Master Linux Network Configuration: IP, Routes, Bonding and Diagnostic Tools
Open Source Linux
Open Source Linux
May 26, 2025 · Operations

Master Linux Log Management: rsyslog, systemd‑journal, and Logrotate Explained

Learn how to configure and manage Linux logging services—including rsyslog and systemd‑journal—by understanding common log files, severity levels, log types, server setup, security settings, manual syslog transmission, journal analysis, persistent storage, and log rotation with logrotate to ensure reliable system monitoring.

log managementlogrotatersyslog
0 likes · 15 min read
Master Linux Log Management: rsyslog, systemd‑journal, and Logrotate Explained
Deepin Linux
Deepin Linux
May 19, 2025 · Operations

Linux System Performance Bottleneck Analysis and Optimization Guide

This comprehensive guide explains how to monitor, diagnose, and resolve Linux server performance bottlenecks by covering essential command‑line tools, logging, automated scripts, and optimization techniques for CPU, memory, disk I/O, and network, with practical case studies and code examples.

OptimizationShell Scriptingperformance monitoring
0 likes · 40 min read
Linux System Performance Bottleneck Analysis and Optimization Guide
Liangxu Linux
Liangxu Linux
May 15, 2025 · Operations

10 Critical Server Ops Mistakes to Avoid and Real-World Lessons

This article outlines ten common server operation pitfalls—such as forced power‑offs, reckless experiments in production, neglecting firewall rules, running unknown scripts as root, unbacked‑up database changes, weak SSH settings, poor log management, exposed ports, unmonitored changes, and delayed patching—each illustrated with real‑world cases and practical remediation advice.

Monitoringbackupsecurity
0 likes · 7 min read
10 Critical Server Ops Mistakes to Avoid and Real-World Lessons
Raymond Ops
Raymond Ops
May 15, 2025 · Operations

Master Linux System Basics: Time, Hostname, Users, Network & Process Commands

This guide provides a comprehensive overview of essential Linux system administration tasks, covering how to view and set system time, manage hostnames, inspect kernel information, handle user and group files, use common network utilities, monitor disk usage, and track processes with tools like top and ps.

Linuxnetwork utilitiesprocess monitoring
0 likes · 42 min read
Master Linux System Basics: Time, Hostname, Users, Network & Process Commands
Liangxu Linux
Liangxu Linux
May 13, 2025 · Operations

Boost Linux Server Performance: Essential Kernel Tweaks and Sysctl Settings

Learn how to permanently disable SELinux, set runlevel to 3, increase file descriptor limits, fine‑tune kernel sysctl parameters, configure firewall settings, and resolve common Linux performance issues such as too many open files and connection timeouts to dramatically improve server throughput.

Performance Tuningkernel parametersserver optimization
0 likes · 7 min read
Boost Linux Server Performance: Essential Kernel Tweaks and Sysctl Settings
Cognitive Technology Team
Cognitive Technology Team
May 13, 2025 · Operations

Essential Linux Log Files to Monitor and How to Access Them

Monitoring key Linux log files—such as syslog, auth.log, kern.log, and others—is crucial for system health, security, and troubleshooting, and this guide explains the purpose of each log, practical commands for viewing them, and automation techniques using scripts, cron, and tools like journalctl and Sematext.

LinuxLog Monitoringbash
0 likes · 20 min read
Essential Linux Log Files to Monitor and How to Access Them
Architect's Must-Have
Architect's Must-Have
May 7, 2025 · Operations

10 Powerful Bash Scripts to Automate System Tasks

This article presents ten advanced Bash script examples that automate common system administration tasks such as backups, resource monitoring, updates, database dumping, FTP uploads, log keyword alerts, report generation, service recovery, temporary file cleanup, and network status checking.

AutomationShell Scriptingbash
0 likes · 5 min read
10 Powerful Bash Scripts to Automate System Tasks
Java Tech Enthusiast
Java Tech Enthusiast
May 4, 2025 · Operations

Comprehensive Linux Command Cheat Sheet

This cheat sheet compiles essential Linux command‑line tools—including navigation (cd, pwd, ls), file manipulation (cp, mv, rm, cat), searching (find, grep), permission management (chmod, chown), archiving (tar), text processing (cut), and redirection or piping—each with common options and practical usage examples for everyday system administration.

LinuxUnixcommand-line
0 likes · 19 min read
Comprehensive Linux Command Cheat Sheet
ITPUB
ITPUB
May 3, 2025 · Information Security

20 Critical Server Operations You Must Never Do – Real Cases & Fixes

Based on analysis of over 500 enterprise server failure cases, this guide lists 20 absolutely prohibited server actions across six dimensions, each illustrated with a real incident and practical technical measures to prevent recurrence.

devopsincident responsesecurity best practices
0 likes · 14 min read
20 Critical Server Operations You Must Never Do – Real Cases & Fixes
Raymond Ops
Raymond Ops
May 2, 2025 · Operations

How to Configure Linux Swap Space for Better Performance

This guide explains what swap space is, why it’s essential for Linux systems, and provides step‑by‑step instructions for configuring swap files or partitions, viewing usage, and understanding its benefits for memory extension, performance optimization, and system stability.

LinuxMemory Managementswap
0 likes · 5 min read
How to Configure Linux Swap Space for Better Performance
Liangxu Linux
Liangxu Linux
May 1, 2025 · Fundamentals

Essential Linux Command-Line Tools Every Sysadmin Should Master

This guide compiles the most powerful and commonly used Linux command-line utilities across system monitoring, networking, file management, text processing, package handling, development, security, and optional graphical tools, offering concise descriptions and practical usage tips to boost efficiency for administrators and developers alike.

system-administration
0 likes · 8 min read
Essential Linux Command-Line Tools Every Sysadmin Should Master
Efficient Ops
Efficient Ops
Apr 29, 2025 · Operations

Master Linux Performance: Essential Monitoring Tools & Commands

This guide compiles the most important Linux performance analysis utilities—such as vmstat, iostat, dstat, iotop, pidstat, top, htop, mpstat, netstat, ps, strace, uptime, lsof, and perf—explaining their usage, output fields, and how they fit into a comprehensive system observability workflow.

Command-line ToolsLinuxObservability
0 likes · 15 min read
Master Linux Performance: Essential Monitoring Tools & Commands
MaGe Linux Operations
MaGe Linux Operations
Apr 24, 2025 · Operations

Master the Linux Command Line: Essential Commands Explained

This comprehensive Linux command cheat sheet covers essential tools such as cd, ls, cp, rm, grep, tar, and many others, providing clear syntax, common options, and practical examples to help users efficiently manage files, processes, permissions, and system operations on Linux.

Unixcommand-lineshell
0 likes · 21 min read
Master the Linux Command Line: Essential Commands Explained
Liangxu Linux
Liangxu Linux
Apr 20, 2025 · Operations

Discover Hidden Memory Consumers on Linux Using hcache – A Practical Guide

Learn how the open‑source hcache tool analyzes Linux page‑cache usage, provides global and per‑process cache rankings, supports multiple output formats, and offers step‑by‑step installation and command examples to pinpoint memory hogs, troubleshoot OOM alerts, and optimize system performance.

Cache MonitoringPerformance Tuninghcache
0 likes · 8 min read
Discover Hidden Memory Consumers on Linux Using hcache – A Practical Guide
Raymond Ops
Raymond Ops
Apr 16, 2025 · Information Security

Boost Linux Server Security: Practical Hardening Steps for RHEL7

This guide walks through a comprehensive Linux hardening checklist for RHEL7, covering account locking, password policies, SSH port changes, SELinux activation, firewall tightening, and file attribute protections to elevate the system to a B1 security level.

LinuxRHEL7hardening
0 likes · 12 min read
Boost Linux Server Security: Practical Hardening Steps for RHEL7
MaGe Linux Operations
MaGe Linux Operations
Apr 15, 2025 · Operations

Master Linux Command Line: Essential Commands and Real‑World Examples

This comprehensive guide introduces Linux fundamentals, explains the relationship between Linux and Unix, describes kernel, shell, and application layers, compares network modes, and provides detailed usage examples for common commands such as init, man, pwd, ls, cd, mkdir, rmdir, touch, cp, rm, mv, cat, grep, tar, zip, and date, helping readers efficiently manage Linux systems.

Unixcommand-lineshell
0 likes · 21 min read
Master Linux Command Line: Essential Commands and Real‑World Examples
Liangxu Linux
Liangxu Linux
Apr 14, 2025 · Fundamentals

Master Linux Environment Variables: View, Set, and Delete Them

This guide explains what Linux environment variables are, lists common ones, and provides step‑by‑step commands for viewing, temporarily or permanently setting, and deleting variables, plus practical script examples to help users manage their shell environment efficiently.

Linuxbashenvironment variables
0 likes · 6 min read
Master Linux Environment Variables: View, Set, and Delete Them
MaGe Linux Operations
MaGe Linux Operations
Apr 4, 2025 · Operations

Master Linux Permissions: From Basics to Advanced chmod Tricks

This guide explains Linux file permission concepts, including the numeric permission model, owner/group/other breakdown, how to combine permissions, use of the chmod command with examples, ownership symbols, testing permissions for users and directories, and default permission settings derived from umask.

File Systemchmodpermissions
0 likes · 6 min read
Master Linux Permissions: From Basics to Advanced chmod Tricks
MaGe Linux Operations
MaGe Linux Operations
Mar 31, 2025 · Information Security

How to Harden Linux Systems: Practical Security Steps for RHEL7

An in‑depth guide shows how to harden a RHEL 7 Linux server by tightening account permissions, enforcing password policies, limiting login attempts, changing SSH settings, restricting compiler use, protecting log files, applying minimal firewall rules, and enabling SELinux to achieve a B1‑level security baseline.

RHEL7hardeningsecurity
0 likes · 13 min read
How to Harden Linux Systems: Practical Security Steps for RHEL7
Liangxu Linux
Liangxu Linux
Mar 30, 2025 · Operations

Top 10 Server Ops Mistakes That Can Cripple Your Business

A concise guide lists the ten most dangerous server‑administration blunders—from forced power‑offs and reckless experiments in production to poor firewall, SSH, backup, and patch management—explaining real‑world incidents and practical safeguards to prevent costly outages and security breaches.

Server Managementbest practicessecurity
0 likes · 6 min read
Top 10 Server Ops Mistakes That Can Cripple Your Business
Efficient Ops
Efficient Ops
Mar 2, 2025 · Operations

How to Diagnose Linux Server Performance Issues in the First 60 Seconds

This article walks you through the ten essential Linux command‑line tools—such as uptime, vmstat, iostat, and top—that Netflix’s performance engineers use to quickly assess system load, resource saturation, and errors within the critical first minute of troubleshooting.

LinuxOpssystem-administration
0 likes · 18 min read
How to Diagnose Linux Server Performance Issues in the First 60 Seconds
Open Source Linux
Open Source Linux
Feb 25, 2025 · Fundamentals

Master Linux Environment Variables: View, Set, and Delete Them

This guide explains what Linux environment variables are, lists common ones, and provides step‑by‑step commands to view, temporarily or permanently set, and delete them, plus practical examples for using variables in scripts, helping users efficiently manage their system configuration.

bashenvironment variablessystem-administration
0 likes · 6 min read
Master Linux Environment Variables: View, Set, and Delete Them
Raymond Ops
Raymond Ops
Feb 19, 2025 · Operations

Configure NFS Server and Auto-Mount Clients on CentOS 7

This guide walks through installing NFS utilities, creating a shared directory, configuring /etc/exports, starting the NFS service, and setting up client machines with /etc/fstab for automatic mounting on CentOS 7, including verification steps.

LinuxNFScentos7
0 likes · 5 min read
Configure NFS Server and Auto-Mount Clients on CentOS 7
Open Source Linux
Open Source Linux
Feb 19, 2025 · Operations

Master Linux Network Management with the Powerful ip Command

This article provides a comprehensive guide to the Linux ip command, covering its syntax, how to view and configure network interfaces, manage IP addresses, routes, VLANs, and ARP entries, enabling users to efficiently administer and troubleshoot network settings.

NetworkNetwork Configurationip command
0 likes · 6 min read
Master Linux Network Management with the Powerful ip Command
MaGe Linux Operations
MaGe Linux Operations
Feb 15, 2025 · Operations

How to Expand Linux Disk Space with LVM: Step‑by‑Step Guide

Learn how to add a new disk, create partitions, adjust partition types, extend physical and logical volumes, and resize the filesystem on a Linux server using fdisk, LVM commands, and xfs_growfs, ensuring the system recognizes the expanded storage without data loss.

Disk ExpansionLVMfdisk
0 likes · 11 min read
How to Expand Linux Disk Space with LVM: Step‑by‑Step Guide
MaGe Linux Operations
MaGe Linux Operations
Feb 4, 2025 · Operations

Step‑by‑Step Guide to Installing and Configuring Samba on Linux

This article walks you through installing Samba on a Linux server, configuring shared directories with custom permissions, verifying client access, restricting mounts to specific users, persisting mounts via /etc/fstab, and creating department‑specific shares, all with concrete command examples.

CIFSSambafile sharing
0 likes · 7 min read
Step‑by‑Step Guide to Installing and Configuring Samba on Linux
MaGe Linux Operations
MaGe Linux Operations
Jan 31, 2025 · Operations

Master Linux Account and Permission Management: Users, Groups, and Commands

This guide explains Linux user and group account types, the structure of /etc/passwd and /etc/shadow, essential commands such as useradd, passwd, usermod, and userdel, as well as file permission concepts, ownership handling with chown, and the use of umask, providing a comprehensive reference for system administrators.

group-managementpermissionssystem-administration
0 likes · 18 min read
Master Linux Account and Permission Management: Users, Groups, and Commands
21CTO
21CTO
Jan 6, 2025 · Operations

Master Linux Cron: Schedule Automated Backups with Easy Step‑by‑Step Guide

Learn how to use Linux's built‑in Cron scheduler to create, configure, and run automated backup jobs, covering crontab syntax, time fields, script creation, permission setup, and redirection of output to /dev/null, with step‑by‑step commands and code examples.

AutomationShell scriptbackup
0 likes · 8 min read
Master Linux Cron: Schedule Automated Backups with Easy Step‑by‑Step Guide
Top Architecture Tech Stack
Top Architecture Tech Stack
Dec 31, 2024 · Operations

Comprehensive Linux Command Reference and Usage Guide

A detailed reference of Linux command-line utilities covering system information, shutdown, file and directory management, searching, mounting, disk usage, user and group administration, permissions, compression, package management, backups, networking, and other essential system administration tasks.

LinuxUnixcommand-line
0 likes · 31 min read
Comprehensive Linux Command Reference and Usage Guide
Liangxu Linux
Liangxu Linux
Dec 29, 2024 · Operations

Master CentOS7 Network Configuration with nmcli and Manual Settings

This guide walks through CentOS7 network configuration, explaining interface naming conventions, using NetworkManager tools like nmcli, editing ifcfg files, changing hostnames, renaming interfaces to eth0, adding kernel parameters, and applying changes with service restarts.

CentOSLinux networkingNetworkManager
0 likes · 8 min read
Master CentOS7 Network Configuration with nmcli and Manual Settings
MaGe Linux Operations
MaGe Linux Operations
Dec 28, 2024 · Operations

Step-by-Step Guide to Upgrading OpenSSH to 8.4p1 on CentOS 7

This tutorial walks you through checking the current OpenSSH version, installing prerequisite packages, backing up existing SSH files, compiling and installing OpenSSH 8.4p1, verifying the configuration, restarting the service, and confirming the upgrade on a CentOS 7 server.

CentOSLinuxOpenSSH
0 likes · 5 min read
Step-by-Step Guide to Upgrading OpenSSH to 8.4p1 on CentOS 7
Raymond Ops
Raymond Ops
Dec 26, 2024 · Operations

Mastering LVM on Linux: From Basics to Advanced Operations

This comprehensive guide explains Linux Logical Volume Manager (LVM) concepts, terminology, installation, essential commands, and step‑by‑step procedures for creating, extending, reducing, migrating, and snapshotting physical, volume, and logical volumes, empowering system administrators to manage storage flexibly and safely.

LVMLinuxVolume Management
0 likes · 31 min read
Mastering LVM on Linux: From Basics to Advanced Operations
Java Backend Technology
Java Backend Technology
Dec 25, 2024 · Operations

Essential Linux Command Cheat Sheet for System Administrators

A comprehensive reference of essential Linux commands covering system information, shutdown, file management, searching, mounting, disk usage, user and group handling, permissions, package management, backup, networking, and common utilities for effective system administration.

LinuxUnixcommand-line
0 likes · 36 min read
Essential Linux Command Cheat Sheet for System Administrators
MaGe Linux Operations
MaGe Linux Operations
Dec 24, 2024 · Information Security

Master Linux File Permissions: From Basics to Advanced ACLs

This guide explains Linux file permissions, covering the concepts of read, write, and execute bits, the UGO model, symbolic and numeric chmod usage, advanced bits like setuid, setgid, sticky, default permissions via umask, ownership changes, and an introduction to ACLs.

ACLLinuxchmod
0 likes · 22 min read
Master Linux File Permissions: From Basics to Advanced ACLs
MaGe Linux Operations
MaGe Linux Operations
Dec 7, 2024 · Operations

Mastering NFS: Deploy Shared Storage on Linux with RPC

This guide explains the purpose of NFS for Linux file sharing, its architecture and RPC relationship, step‑by‑step server and client deployment, integration with Nginx, and common troubleshooting techniques for reliable shared storage in production environments.

LinuxNFSNGINX
0 likes · 18 min read
Mastering NFS: Deploy Shared Storage on Linux with RPC
MaGe Linux Operations
MaGe Linux Operations
Nov 27, 2024 · Operations

Master Linux User Management: Create, Modify, and Secure Accounts

This guide explains Linux user concepts, differences from Windows, how to view, create, modify, and delete users and groups, manage passwords, configure sudo and su for privilege escalation, and understand the critical /etc/passwd and /etc/shadow files, providing practical command examples and security tips.

CommandsGroupsLinux
0 likes · 26 min read
Master Linux User Management: Create, Modify, and Secure Accounts
Ops Development & AI Practice
Ops Development & AI Practice
Nov 26, 2024 · Operations

How Linux’s OOM Killer Works and How to Protect Critical Processes

Linux’s OOM Killer activates when memory is exhausted, scoring processes based on usage, priority, and kernel settings, then terminating the highest‑scoring one; the article explains its background, scoring algorithm, influencing parameters, and practical steps such as adjusting oom_score_adj, optimizing memory use, and using cgroups to safeguard essential services.

LinuxMemory ManagementOOM killer
0 likes · 5 min read
How Linux’s OOM Killer Works and How to Protect Critical Processes
Practical DevOps Architecture
Practical DevOps Architecture
Nov 19, 2024 · Operations

Comprehensive Linux Learning Curriculum and Resource Guide

This article presents a detailed multi‑phase Linux learning curriculum, covering environment setup, basic and advanced command usage, system services, security, monitoring, high‑availability clustering, virtualization, containerization, cloud platforms, and provides extensive recommended reading links for further study.

Dockerdevopskubernetes
0 likes · 5 min read
Comprehensive Linux Learning Curriculum and Resource Guide
MaGe Linux Operations
MaGe Linux Operations
Nov 19, 2024 · Operations

Master Linux Disk Management: From CHS to LVM and RAID Explained

This comprehensive guide walks you through Linux storage fundamentals, covering CHS terminology, partitioning with MBR/GPT, LVM creation and expansion, RAID levels, file system selection, mounting, swap handling, package management, private YUM repository setup, OSI layers, ports, TCP basics, and IP address classification.

LVMLinuxRAID
0 likes · 46 min read
Master Linux Disk Management: From CHS to LVM and RAID Explained
MaGe Linux Operations
MaGe Linux Operations
Nov 13, 2024 · Operations

Master Linux User & Group Management: Commands, Files, and Best Practices

This comprehensive guide explains Linux user and group concepts, classification, security contexts, essential configuration files, password policies, and detailed command examples for creating, modifying, and deleting users and groups, helping administrators efficiently manage system access and permissions.

LinuxShell Commandsgroup-management
0 likes · 17 min read
Master Linux User & Group Management: Commands, Files, and Best Practices
Liangxu Linux
Liangxu Linux
Nov 7, 2024 · Operations

How to Manage Mobile Devices and Swap Space on Linux Systems

This guide explains mounting USB storage, checking device status, configuring NTFS support, and creating, enabling, and disabling swap partitions or swap files on Linux, including practical commands and configuration steps for Ubuntu and CentOS.

CentOSLinuxUSB
0 likes · 6 min read
How to Manage Mobile Devices and Swap Space on Linux Systems
dbaplus Community
dbaplus Community
Nov 7, 2024 · Operations

Why Windows Server 2025 Auto‑Upgraded Your 2022 Servers—and How to Fix It

Shortly after Microsoft released Windows Server 2025, many administrators discovered that their Windows Server 2022 machines were silently upgraded to the unlicensed 2025 version, exposing several known bugs, licensing issues, and a mis‑labelled update that required immediate mitigation and rollback strategies.

LicensingPatch managementWindows Server
0 likes · 11 min read
Why Windows Server 2025 Auto‑Upgraded Your 2022 Servers—and How to Fix It
MaGe Linux Operations
MaGe Linux Operations
Nov 4, 2024 · Operations

Master Linux Shell: Essential Commands, Prompt Customization, and Session Management

This guide introduces the Linux shell, explains how to view and set the current shell and hostname, customize the command prompt, differentiate internal and external commands, manage aliases, use common utilities, handle sessions with screen and tmux, and employ advanced echo formatting and safety deletion techniques.

Linuxshellsystem-administration
0 likes · 14 min read
Master Linux Shell: Essential Commands, Prompt Customization, and Session Management
Liangxu Linux
Liangxu Linux
Nov 2, 2024 · Operations

How to Manage USB Devices and Configure Swap Space on Linux

This guide explains how to detect and mount USB storage devices on Linux, install NTFS support, view system logs, and set up swap space—either as a dedicated partition or a swap file—while covering swappiness tuning and enabling or disabling swap.

Linuxdevice managementswap
0 likes · 7 min read
How to Manage USB Devices and Configure Swap Space on Linux