AlmaLinux vs Rocky Linux vs Ubuntu Server: Which OS for Your VPS?
Compare AlmaLinux, Rocky Linux and Ubuntu Server for VPS and bare metal: RHEL compatibility, support lifecycle, packages, SELinux…
Read tutorial →linux
Browse step-by-step tutorials in this topic.
Nginx vs Apache: Which Web Server Should You Use on Linux?
Compare Nginx and Apache on Linux: performance models, .htaccess vs server blocks, PHP-FPM, reverse proxy, TLS, and when…
Read tutorial →
nftables on Linux: Basic Firewall Rules (SSH, HTTP/HTTPS) That Persist
Set up nftables on Linux: tables, chains, default drop, allow SSH and web ports, persist ruleset to /etc/nftables.conf,…
Read tutorial →
mysqldump on Linux: Backup and Restore MySQL/MariaDB (Single Transaction)
Back up MySQL or MariaDB with mysqldump: --single-transaction for InnoDB, compress dumps, schedule with systemd timers, and test…
Read tutorial →
systemd Timers on Linux: Schedule Jobs (Cron Alternative) With journalctl Logs
Create systemd timer units on Linux: OnCalendar schedules, linked oneshot services, list-timers, enable on boot, and migrate from…
Read tutorial →
vmstat and iostat on Linux: CPU, Memory, Swap and Disk Bottlenecks
Read vmstat and iostat on Linux: runnable processes, iowait, swap in/out, disk utilization and await, and what to…
Read tutorial →
awk and sed on Linux: Cut Columns, Search-Replace and Log Parsing
Use awk and sed on Linux to extract columns, filter lines, substitute text, edit files safely, and chain…
Read tutorial →
scp and sftp on Linux: Copy Files Securely Over SSH (Upload, Download, Keys)
Copy files with scp and sftp over SSH: push and pull paths, -r directories, non-default ports, SSH keys,…
Read tutorial →
How to Add a Swap File on Linux (Create, Enable, fstab and swappiness)
Create a swap file on Linux with fallocate or dd, mkswap, swapon, persist in /etc/fstab, tune vm.swappiness, and…
Read tutorial →
chmod and chown on Linux: File Permissions, Octal Mode and Ownership
Understand Linux file permissions with ls -l, chmod ugo and 755/644 octal modes, recursive chmod, chown user:group, and…
Read tutorial →