Bash Scripting for Cybersecurity | Build a Script That Detects Attacks

Stop typing every Linux command by hand. In this video, you’ll write your first Bash scripts and learn variables, command substitution, exit codes, and if statements. Then we build a real security tool: a script that checks a Linux server and warns you when someone is guessing SSH passwords. We attack our own lab server from a second machine and watch the script catch it automatically.

⏱️ Timestamps
0: 00 From typing commands to automation
0: 30 Your first Bash script
2: 00 Variables
2: 45 Command substitution
4: 00 Exit codes
5: 00 The security checker script
6: 30 Attacking my own lab server
8: 00 Why scripts matter in cybersecurity
8: 45 Next video

📌 This is part of a series where KernelPath teaches Linux for cybersecurity, step by step. Previous videos covered processes, network connections, services, finding files, Linux logs, and brute-force detection. Subscribe and follow the series so you don’t miss the next video: building a full Linux recon script that collects everything about a host in one run.

⚠️ All demonstrations are performed on my own lab VMs for educational purposes. Never test on systems you don’t own or have permission to test.

#Linux #Bash #Cybersecurity