Category: Linux

59 questions in Linux.

How to configure DNS on Linux

August 05, 2025 · Linux

Set up and troubleshoot DNS resolution using resolv.conf, systemd-resolved, and command-line tools like dig and nslookup.

August 02, 2025 · Linux

Copy files securely between local and remote systems using scp and synchronize directories efficiently with rsync.

July 30, 2025 · Linux

Securely connect to remote Linux servers using SSH with key authentication, port forwarding, and configuration files.

July 26, 2025 · Linux

Set up Linux firewall rules using iptables directly or the simplified ufw interface for security hardening.

July 23, 2025 · Linux

List, monitor, and control running processes using ps, top, htop, kill, and nice in Linux.

July 20, 2025 · Linux

Query and monitor systemd journal logs using journalctl with filters for time, unit, priority, and boot.

July 17, 2025 · Linux

Automate recurring tasks on Linux using cron jobs, crontab syntax, and environment configuration.

July 14, 2025 · Linux

Start, stop, enable, and inspect system services using systemctl and journalctl on modern Linux distributions.

July 11, 2025 · Linux

Chain commands and control input/output streams using pipes, redirects, and tee in the Linux shell.

July 08, 2025 · Linux

Perform non-interactive text transformations using sed for find-and-replace, deletion, and line manipulation.