Virtarix Blog

Use these practical Bash script examples for Linux server admins, including backups, log checks, disk alerts, cleanup previews, and reports.

Understand how cron job load on a VPS can create hidden resource spikes, overlapping tasks, and operational surprises.

Plan DNS changes for a VPS move with record inventory, TTL timing, destination checks, cutover windows, and post-change verification.

Create a MongoDB backup on a VPS with mongodump, compress it, store it off-server, and verify it with a restore test before automating.

Change SSH port settings on a Linux VPS without locking yourself out by opening the firewall, testing sshd, and keeping a fallback session.

Learn how to check CPU usage on Linux with top, htop, and mpstat, then interpret load, idle time, iowait, and steal time on a VPS.

Check Linux memory usage with free, vmstat, and ps, then interpret available memory, cache, swap, paging, RSS, and VPS pressure safely.

Learn how to find a file in Linux with find, locate, and grep, including name searches, content searches, symbolic links, and VPS-safe examples.

Install conda on Ubuntu Server with Miniconda, verify the installer, initialize your shell, create an environment, and avoid VPS Python mistakes.

Install Python on Ubuntu Server with apt, python3-full, pip, venv, and a safe virtual environment workflow for VPS projects.

Learn how to kill a process in Linux safely with PID checks, TERM before KILL, pkill, killall, and top.

Learn how to list all iptables rules on Linux with -L, -S, iptables-save, table-specific views, numeric output, and line numbers.

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