RESOURCE MONITOR
CPU23%
MEMORY67%
DISK I/O45%
NETWORK89%
SYSTEM MONITOR
|
SECURITY LOG
[14:23:45]INFOUser authentication successful
[14:23:47]WARNSuspicious network activity detected
[14:23:50]INFOFirewall rule updated
NETWORK SCAN
Scanning ports: 22, 80, 443, 3389
192.168.1.100 - OPEN
192.168.1.101 - FILTERED
Scan completed: 4/4 ports

Email Validation

Lesson 1 of 5 - Regex Applications

Lesson Progress0/4
20 minutes
Intermediate

1
Basic Email Structure

Theory

A valid email has three main parts: local part (before @), @ symbol, and domain part (after @). Each part has specific rules for valid characters.

Example

/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/

Practical Understanding

Start simple - match the basic structure, then add more specific validation rules as needed.