Host Availability Check (HAC)

A lightweight Batch script to quickly verify the availability of multiple IP addresses or hostnames from a file.

Requirements

• Operating System: Microsoft Windows
• Interpreter: cmd.exe (Command Prompt)
• A .txt file containing one IP address or hostname per line

Features

• Multi-host availability check
• Supports both IP addresses and hostnames
• 2-second timeout per host
• Clean console output
• Automatic report generation (hac_report.txt)
• Progressive host counter

Description

The script:

1. Validates that an input file is provided
2. Checks whether the file exists
3. Reads each line (one host per line)
4. Sends one ping request (-n 1) with a 2000ms timeout (-w 2000)
5. Prints the result to the console
6. Saves results into hac_report.txt

This tool is ideal for:

• Network diagnostics
• Quick LAN/WAN reachability checks
• Basic server monitoring
• IT troubleshooting tasks
• Testing in LAN environments

Project Structure

hac/
├── hac.bat
├── hosts.txt
└── hac_report.txt (generated)

Example

Create a file (e.g., hosts.txt)

8.8.8.8
google.com
192.168.1.1

Run the script

hac.bat hosts.txt

Console output

[1] Pinging 8.8.8.8 ...
    REACHABLE

[2] Pinging google.com ...
    REACHABLE

[3] Pinging 192.168.1.1 ...
    UNREACHABLE

Generated report (hac_report.txt)

Ping results:
REACHABLE - 8.8.8.8
REACHABLE - google.com
UNREACHABLE - 192.168.1.1