port_scanner

Mini port scanner in bash.

The script's main objective is to check if ports from a given IP address are open.

Features

Script follows these steps

1. Checking if variables are properly used.
2. Creating function scan_port with timeout 1 bash -c "echo > /dev/tcp/$host/$port" 2>/dev/null, which avoid dependence on external tools.
3. Scanning from start port to end port with scan_port function and displaying which ports are open.

Usage:

1. Clone the repository: git clone
2. Make the script executable: chmod +x port_scanner.sh
3. Run the script: ./port_scanner <target_ip_address> <starting_port> <end_port>

To make the script available system-wide, move it to your local binary directory, e.g.: e.g. mv port_scanner.sh /usr/local/bin/portscanner

Requirements

• Linux OS
• Bash

Future development

• Save scan results to a text file.