How to handle file uploads with shell2http?

Use the -form option to parse uploaded files into environment variables like $filepath_ID, as shown in the upload example. Temporary files are automatically deleted after script execution, making it easy to process uploads.

shell2http vs webhook: which is better for creating webhooks?

shell2http is simpler and command-line based, ideal for quick tasks and prototyping, while webhook is configurable via JSON and might offer more features for complex scenarios. Choose based on your need for simplicity versus configuration flexibility.

How to secure shell2http endpoints with authentication?

Use the -basic-auth option to set up HTTP Basic Authentication with multiple users, as detailed in the options. For production, combine this with HTTPS via -cert and -key options, but note that input validation is still manual.

Can shell2http return JSON responses?

Yes, by using the -cgi mode to set custom headers like 'Content-Type: application/json' in the script output, as demonstrated in the mock service example. This allows easy API mocking for development.

How to run shell2http in a Docker container?

Pull the Docker image from Docker Hub and define commands in the CMD, similar to the example Dockerfile provided. Map ports with -p and use --init to manage processes, but be aware of sandboxing issues in snap packages.

What are the performance implications of using shell2http?

Since each request executes a shell command, it can be slow for frequent requests. Use caching with -cache to mitigate this, but it's not designed for high-traffic applications; consider dedicated servers for production loads.

Open-Awesome

shell2http

MITGov1.17.0

A minimal HTTP server that executes shell commands via simple HTTP endpoints, ideal for prototyping and remote control.

GitHub

1.5k stars148 forks0 contributors

What is shell2http?

shell2http is a command-line tool that creates an HTTP server to execute shell commands via defined endpoints. It solves the problem of quickly exposing system scripts or commands as web services for remote access, automation, or testing without writing custom server code.

Target Audience

Developers and system administrators who need to create simple HTTP interfaces for shell scripts, automate tasks via webhooks, or mock APIs during development.

Value Proposition

Developers choose shell2http for its extreme simplicity and zero-configuration approach, allowing them to turn any shell command into a web endpoint instantly, with built-in features like form handling, authentication, and CGI support.

Overview

Executing shell commands via HTTP server

Use Cases

Best For

Creating quick HTTP endpoints for system monitoring commands (e.g., top, ps, date)
Building simple web interfaces to control local applications or hardware remotely
Mocking JSON APIs for frontend development without backend setup
Automating tasks via HTTP requests or webhooks in CI/CD pipelines
Prototyping microservices by exposing shell scripts as temporary APIs
Setting up lightweight HTTP proxies with logging or caching for debugging

Not Ideal For

Production APIs requiring robust input validation and security hardening, as shell command exposure risks injection attacks
Applications needing real-time features like WebSockets or server-sent events, since it only supports basic HTTP request-response
Teams building complex web services with middleware, session management, or database integrations, due to its minimalist, command-focused design

Pros & Cons

Pros

Zero-Boilerplate Setup

Define endpoints and shell commands directly from the command line with just two arguments, eliminating the need for custom server code, as shown in the simple usage examples.

Flexible Form Handling

Parses query parameters and file uploads into environment variables like $v_NNN and $filepath_ID, enabling dynamic script inputs without complex parsing, demonstrated in the form and upload examples.

Built-in Caching

Cache command output for specified seconds using the -cache option to reduce redundant executions, improving efficiency for repetitive requests such as monitoring endpoints.

Cross-Platform Deployment

Available via binaries, Docker, and package managers for macOS, Linux, Windows, and Raspberry Pi, ensuring easy installation and wide compatibility across environments.

Cons

Security Vulnerabilities

Exposing shell commands directly can lead to command injection if user inputs are not sanitized, and the README lacks comprehensive security best practices beyond basic auth.

Limited HTTP Protocol Support

Does not support advanced HTTP features like WebSockets, custom middleware, or complex routing, restricting its use for modern, feature-rich web applications.

Performance Overhead

Each HTTP request spawns a new shell process, which can be slow and resource-intensive under high load compared to dedicated HTTP servers or frameworks.

Frequently Asked Questions

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