run-on-each

A tiny Bash helper to run a single command in each immediate subdirectory of the current folder.

Features

• Executes your command in every immediate child directory (one level deep).
• Prints each directory name in green before running your command.
• Always returns to the original directory when finished.
• Skips directories it cannot enter.

Requirements

• bash
• find and tput (commonly available on most Linux/macOS systems)

Usage

1. Make the script executable (once): chmod +x run.sh
2. From the parent directory of the targets, run: ./run.sh "your command here"

Examples

• Update many Git repos: ./run.sh "git checkout main && git pull --ff-only"
• Install Node dependencies across projects: ./run.sh "npm ci"
• Check Python version in each subdirectory: ./run.sh "python3 --version"

Notes

• Quote the command so it is passed as a single argument.
• The command runs with the working directory set to each subdirectory.
• Only immediate subdirectories are processed (no recursion).
• If a command fails in one directory, the script continues with the next.