ShellBridge - companion for cross-platform shell commands

Nikhil Kottoli — Mon, 02 Feb 2026 19:27:08 +0000

This is a submission for the GitHub Copilot CLI Challenge

Github Repository : https://github.com/NikhilKottoli/ShellBridge

ShellBridge

ShellBridge is an intelligent CLI tool that leverages GitHub Copilot CLI to bridge the gap between different operating system shells. It translates shell commands seamlessly between Linux, macOS, and Windows, allowing developers to work across environments without memorizing platform-specific syntax.

Why ShellBridge?

The Problem That Started It All

During my computer networks class, the professor was demonstrating IP address commands. He typed ip a and expected us to follow along. While my classmates on Linux machines had no issues, I sat there stuck—I was using a different OS, and the command simply didn't work. By the time I figured out what I needed to type, the class had already moved on.

That frustrating experience made me realize: we shouldn't have to translate commands in our heads while trying to learn.

You've Been There Too

Sound familiar? Every developer faces these moments:

Following tutorials that assume your OS – "Just run this command!" (but it only works on Linux)
Switching between environments – Mac at home, Linux servers at work, Windows in the lab
Stack Overflow roulette – Finding the perfect solution... for the wrong platform
Collaborating across platforms – Your teammate sends commands that don't work on your system
Breaking your flow – Stopping to search "windows equivalent of grep" for the tenth time

The Solution

ShellBridge eliminates this friction. Focus on learning, building, and solving problems—not memorizing platform-specific syntax. Whether you're a student trying to keep up in class, a developer context-switching between systems, or a team member sharing knowledge across platforms, ShellBridge has your back.

Powered by GitHub Copilot CLI

ShellBridge harnesses the intelligence of GitHub Copilot CLI to provide context-aware, accurate command translations. This isn't just simple string replacement—Copilot understands what you're trying to accomplish and generates the most appropriate cross-platform equivalent.

How Copilot CLI Makes It Possible

Smart Context Understanding: Copilot doesn't just do literal translation—it understands the intent behind your command
Handles Edge Cases: For complex commands without direct equivalents, Copilot suggests idiomatic alternatives
Vast Knowledge Base: Benefits from Copilot's extensive training on shell commands across all major platforms
Pipe Intelligence: Understands complex piped workflows and translates each component appropriately
Natural Language: Copilot bridges the gap between human intent and shell syntax

Features

OS Detection: Automatically detects your current operating system
AI-Powered Translation: GitHub Copilot CLI intelligently translates commands between Linux, macOS, and Windows
Hybrid Intelligence: Fast local lookups for common commands, Copilot CLI for complex queries
Piped Command Support: Automatically splits and translates piped commands (e.g., ip a | grep "127.0.0.1")
Copilot-Enhanced Explanations: Get AI-generated explanations for what commands do and why
Context-Aware: Detects WSL, Docker, and GitBash environments; corrects path separators and environment variables
Auto-Correction: Shell integration suggests translations for unknown commands directly in your terminal
Safe Execution: Preview and execute translated commands with confidence

See It In Action

Example 1: Network Troubleshooting Across Platforms

Scenario: You're following a Linux tutorial on macOS

# The tutorial says:
ip addr show | grep inet

# ShellBridge translates it instantly using Copilot CLI:
$ shellbridge translate "ip addr show | grep inet" --target macos

 Translated by GitHub Copilot CLI:
ifconfig | grep inet

# Want to understand what it does?
$ shellbridge explain "ifconfig | grep inet"

 Copilot explains:
Lists all network interfaces and filters output to show only lines containing 
IP addresses (both IPv4 and IPv6). The 'inet' keyword matches address lines.

Example 2: Package Management Translation

# Linux command from documentation:
$ shellbridge translate "sudo apt update && sudo apt install nginx" --target macos

 Translated by GitHub Copilot CLI:
brew update && brew install nginx

# What about Windows?
$ shellbridge translate "sudo apt install nginx" --target windows

 Translated by GitHub Copilot CLI:
choco install nginx
# Or alternatively: winget install nginx

Example 3: Complex Piped Commands

# Original Windows PowerShell command:
$ shellbridge translate "Get-Process | Sort-Object CPU -Descending | Select-Object -First 10" --target linux

 Translated by GitHub Copilot CLI:
ps aux | sort -k3 -rn | head -10

Copilot understands:
- Get-Process → ps aux
- Sort-Object CPU → sort -k3 (CPU is 3rd column)
- -Descending → -rn (reverse numeric)
- Select-Object -First 10 → head -10

Example 4: Auto-Correction in Your Shell

# On macOS, you accidentally type a Linux command:
$ ip addr show
zsh: command not found: ip

ShellBridge suggests:
Did you mean: ifconfig
Run it? [y/N] y

# Executes the correct command automatically!

Installation

Prerequisites

Rust Toolchain: Ensure you have Rust and Cargo installed

   curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Or visit Install Rust

GitHub Copilot CLI: Required for AI-powered translations

   # Install GitHub Copilot CLI
   gh extension install github/gh-copilot

   # Authenticate
   gh auth login

Build from Source

git clone https://github.com/NikhilKottoli/ShellBridge.git
cd ShellBridge
cargo build --release

The binary will be available in target/release/shellbridge.

Optional: Add to PATH

# Linux/macOS
sudo cp target/release/shellbridge /usr/local/bin/

# Or add to your PATH
export PATH="$PATH:/path/to/ShellBridge/target/release"

Shell Integration (Recommended)

Enable automatic command correction by sourcing the setup script in your shell configuration.

# For Zsh (macOS default)
echo 'source /path/to/ShellBridge/shellbridge_init.sh' >> ~/.zshrc
source ~/.zshrc

# For Bash
echo 'source /path/to/ShellBridge/shellbridge_init.sh' >> ~/.bashrc
source ~/.bashrc

Now when you type an unknown command, ShellBridge automatically suggests the platform-appropriate alternative!

Usage

Basic Translation

Translate commands to your current OS or specify a target platform.

# Translate to current OS (auto-detected)
shellbridge translate "ip a"

# Translate to specific OS
shellbridge translate "ip a" --target macos
# Output: ifconfig

shellbridge translate "dir" --target linux
# Output: ls -la

shellbridge translate "ls -la" --target windows
# Output: Get-ChildItem

Piped Commands

ShellBridge intelligently handles pipes, using Copilot CLI to translate each component.

shellbridge translate "ip a | grep 'inet'" --target macos
# Output: ifconfig | grep 'inet'

shellbridge translate "netstat -tuln | grep LISTEN" --target macos
# Output: lsof -nP -iTCP -sTCP:LISTEN

Command Explanations

Let Copilot CLI explain what commands do and why you'd use them.

shellbridge explain "chmod 777"

GitHub Copilot explains:
Sets read, write, and execute permissions for all users (owner, group, and others) 
on a file or directory. 

Warning: This is generally considered insecure as it gives everyone full access. 
Consider using more restrictive permissions like 755 or 644.

shellbridge explain "awk '{print \$2}'"

GitHub Copilot explains:
The awk command processes text line by line. This specific command prints the 
second field (column) from each line, where fields are separated by whitespace 
by default. Commonly used for extracting specific columns from command output.

Execute Translated Commands

Run translated commands immediately with the --execute (or -e) flag.

# Translate and execute in one step
shellbridge translate "ls -la" --execute

# Preview before execution
shellbridge translate "rm -rf temp/" --target windows
# Output: Remove-Item -Recurse -Force temp/
# Execute? [y/N]

Cross-Platform Workflows

# You're on macOS, following Windows documentation
shellbridge translate "ipconfig /all" --target macos
# Output: ifconfig -a

# You're on Linux, following macOS guide
shellbridge translate "brew services start nginx" --target linux
# Output: sudo systemctl start nginx

# Windows user following Linux tutorial
shellbridge translate "sudo systemctl status docker" --target windows
# Output: Get-Service docker

Architecture

ShellBridge uses a hybrid intelligence approach combining speed and AI power:

User Command
     ↓
┌─────────────────────────────────────┐
│  1. Fast Path: Local Database      │
│     • Instant lookup for common    │
│       commands (ls, cd, pwd, etc.) │
│     • No network latency           │
└─────────────────────────────────────┘
     ↓ (if not found)
┌─────────────────────────────────────┐
│  2. Intelligent Path: Copilot CLI  │
│     • Complex command analysis     │
│     • Context-aware translation    │
│     • Handles edge cases           │
│     • Suggests best practices      │
└─────────────────────────────────────┘
     ↓ (for piped commands)
┌─────────────────────────────────────┐
│  3. Recursive Processing           │
│     • Splits pipes intelligently   │
│     • Translates each segment      │
│     • Reassembles with correct     │
│       platform syntax              │
└─────────────────────────────────────┘

Key Components

Core Engine: CLI parsing, OS detection, and command routing
Local Database: JSON store of common command mappings (data/commands.json)
Copilot Integration: Queries GitHub Copilot CLI for intelligent translation
Context Analyzer: Detects execution environment (WSL, Docker, GitBash)
Shell Hook: Provides real-time command suggestions in your terminal

Demo

Walkthrough :
https://youtu.be/n3jtsuq8XRM

My Experience with GitHub Copilot CLI

Building ShellBridge required a reliable way to translate infinite command possibilities. GitHub Copilot CLI became the project's intelligence core, handling everything from complex piped commands to platform-specific nuances that a static database simply couldn't cover. Its natural language understanding allowed me to implement accurate cross-platform translations without manually mapping thousands of edge cases. Integrating it was seamless, transforming what would have been an impossible manual task into a dynamic, AI-powered system that adapts to any user environment.

Forem: Nikhil Kottoli