Bash Read CSV File Line by Line Shell Script (IFS, Validation, Logging)
Parse CSV files in Bash safely: while read loop, IFS commas, skip header row, validate fields, and log…
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/etc Configuration Backup Shell Script for Linux (tar, Retention, Restore Hint)
Back up /etc on Linux with a Bash script: compressed tar archives, dated filenames, retention cleanup, and notes…
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WordPress Backup and Restore on Linux: Database, wp-content and Automation
Back up WordPress on Linux: mysqldump wp tables, rsync wp-content, gzip archives, cron/systemd automation, off-site copy, restore order,…
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How to Install Nginx on Linux: Server Blocks, Static Sites and proxy_pass Basics
Install Nginx on Ubuntu and AlmaLinux: package install, sites-available layout, first server block, nginx -t, serve static HTML,…
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Reset Root Password on Linux: GRUB Single-User Mode and Recovery (Ubuntu/RHEL)
Reset forgotten Linux root password: GRUB boot menu, edit linux line init=/bin/bash, remount rw, passwd root, cloud VPS…
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Ubuntu apt update and upgrade: Full Guide (upgrade, full-upgrade, autoremove, reboots)
Master Ubuntu package updates: apt update vs upgrade vs full-upgrade, autoremove, list upgradable packages, apt hold, kernel reboot…
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Linux Symbolic Links: ln -s, Absolute Paths, Broken Links and Web Deploys
Create Linux symbolic links with ln -s: syntax, ls -l, web deploy current/release pattern, find broken links, hard…
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Linux Networking: ip, ping, traceroute and mtr (Troubleshooting Guide)
Troubleshoot Linux networking with ip addr/route, ping for reachability, traceroute for path hops, mtr for packet loss, and…
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Mount a Disk on Linux: Partition, ext4, mount and fstab (UUID)
Mount a new disk on Linux: lsblk, partition with fdisk, mkfs.ext4, mount, persist with /etc/fstab UUID and defaults,nofail,…
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SSH Connection Refused on Linux: Fix Port, sshd, Firewall and SELinux
Fix SSH connection refused: verify sshd is running and listening, correct Port in sshd_config, UFW/firewalld and cloud security…
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