Linux Commands Reference - Complete Linux Command Guide
Comprehensive Linux command reference with 150+ commands. Search, filter by category, and view detailed usage examples.
nmap
Network scanning and security audit tool
Syntax
nmap [OPTION]... TARGETCommon Options
-sSTCP SYN scan-sTTCP connect scan-sUUDP scan-sVService version detection-OOS detection-pSpecify port range-AAggressive scan-snHost discovery onlyCommon Examples
nmap 192.168.1.1Scan host
nmap -sV 192.168.1.1Service version detection
nmap -p 80,443 192.168.1.1Scan specific ports
nmap -sn 192.168.1.0/24Network host discovery
nmap -O 192.168.1.1OS detection
nmap -A 192.168.1.1Aggressive scan
nmap -p 1-1000 192.168.1.1Scan port range
nmap -sU -p 53 192.168.1.1UDP scan DNS port
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