Tutorials
Step-by-step technical guides on Docker, Linux, Python, Go, and more.
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Go: Convert String to Int (and Int to String) — Complete Guide (2026)
Convert string to int in Go using strconv.Atoi, strconv.ParseInt, fmt.Sscanf. Convert int to string with strconv.Itoa, FormatInt, Sprintf. All methods compared.
go mod tidy Explained: Clean Up Go Module Dependencies (2026)
go mod tidy adds missing and removes unused dependencies from go.mod and go.sum. Learn go mod download, verify, vendor, -e flag, and common post-tidy errors.
Hashcat Rule-Based Attacks: Crack Complex Passwords (2026 Guide)
Complete guide to Hashcat rule-based attacks. Learn built-in rules (best64, rockyou-30000), write custom rules, and use OneRuleToRuleThemAll. Updated March 2026.
Hashcat vs Hydra: Which Password Tool Should You Use? (2026)
Hashcat vs Hydra compared: offline vs online cracking, speed, use cases, and when to use each. Includes Hydra syntax for SSH, FTP, HTTP and Hashcat examples. Updated 2026.
Hashcat Wordlist Attack Tutorial: Crack Passwords with rockyou.txt (2026)
Step-by-step Hashcat wordlist attack tutorial using rockyou.txt. Covers MD5, NTLM, and WPA2 hash cracking with exact commands and real output examples. Updated March 2026.
How to Install Nessus on Ubuntu 22.04 / 24.04 (2026 Guide)
Step-by-step guide to install Nessus on Ubuntu 22.04 and 24.04 in 2026. Download .deb, dpkg install, start service, activate Essentials free tier, run first scan.
iwconfig vs iw: Which WiFi Command to Use in Linux 2026
Learn why iwconfig is deprecated and when to use iw instead. Covers scanning, signal check, monitor mode, channel config with real command examples.
journalctl: Filter and Search System Logs (2026 Guide)
journalctl guide 2026. Filter by unit, time, priority, boot. Output formats, persistent logs, disk usage, vacuum. Complete command reference with examples.
Nessus Scan Configuration Best Practices (2026)
Nessus scan configuration best practices 2026: scan types, credential scanning, port ranges, safe checks, scheduling, reducing false positives, and exporting PDF/CSV reports.
RTL8812AU on Kali Linux 2026: Monitor Mode & Packet Injection (Kernel 6.14 Guide)
Complete guide to RTL8812AU on Kali Linux 2026. Kernel 6.14 now includes RTL8812AU natively — no DKMS needed. Works with Archer T4UHP, Alfa AWUS036ACH, and more.