SSH Config Change Monitor

A Bash script to monitor changes in your SSH configuration file (~/.ssh/config) and send notifications for added or removed hosts via webhooks.

Features

• Monitor SSH Config File: Watches the ~/.ssh/config file for changes.
• Detect Changes: Identifies added and removed Host and HostName entries.
• Webhook Integration:
  • Sends notifications for added hosts to a designated webhook.
  • Sends notifications for removed hosts to a separate webhook.
• State Management: Maintains the last known state of the SSH config for accurate change detection.

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How It Works

1. The script parses the ~/.ssh/config file and extracts Host and HostName pairs.
2. It compares the current state of the SSH config with the last known state stored in a temporary file.
3. Sends:
   • Added Hosts: To the webhook specified in the WEBHOOK_ADDED variable.
   • Removed Hosts: To the webhook specified in the WEBHOOK_REMOVED variable.
4. Updates the state file for future comparisons.

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Requirements

• Bash: Ensure Bash is installed on your system.
• curl: Required for sending webhook requests.

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Windows Compatibility

On Windows machines, you can use Git Bash to execute this script. Git Bash provides a Unix-like environment on Windows and supports tools like bash, curl, and cron.

Steps:

1. Install Git Bash:

   • Download and install Git for Windows from git-scm.com.
   • Open Git Bash from the Start Menu after installation.

2. Run the Script:

   • Navigate to the directory containing the script in Git Bash.
   • Execute the script using:

     ./update.sh

3. Automate Execution:

   • Use a cron-like scheduling tool in Git Bash to run the script periodically if needed:

     crontab -e

   • Add an entry to execute the script at your desired interval:

     */5 * * * * /path/to/update.sh

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Customization

• Change State File Location: Modify the TEMP_STATE variable to specify a different path for the state file.

• Customize Webhook Payloads: Adjust the PAYLOAD construction to include additional fields or modify the structure.

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License

This project is licensed under the MIT License.

About Webnestify

Hi! I’m Simon, the founder of Webnestify. At Webnestify, we are passionate about empowering businesses and developers by providing cutting-edge tools, tutorials, and resources for managing web infrastructure. Our mission is to make complex web hosting and management tasks accessible, cost-effective, and open-source friendly.

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Why Webnestify?

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Visit our website to learn more: Webnestify.cloud