entrRun arbitrary commands when files change. Useful for watching files and triggering builds or tests.
Install via ClawdBot CLI:
clawdbot install gumadeiras/entrA utility for running arbitrary commands when files change.
entr takes a list of filenames from standard input and executes the utility specified as the first argument.
<file_listing_command> | entr <utility> [arguments]-c: Clear the screen before invoking the utility.-r: Reload a persistent child process (e.g., a server).-s: Evaluate the first argument using the interpreter specified by SHELL.Rebuild project when sources change:
find src/ -name "*.c" | entr makeRun tests when JS files change:
git ls-files | grep '\.js
Auto-reload a Node server:
ls *.js | entr -r node app.js
Agent Notes
entr blocks the terminal. When using it as an agent:
- Use
process tool to run it in the background if you need to do other things.
- Or use it for a quick "watch mode" session where you intend to monitor output for a while.
| entr npm testAuto-reload a Node server:
CODE3
entr blocks the terminal. When using it as an agent:
process tool to run it in the background if you need to do other things.Generated Mar 1, 2026
Front-end developers can use entr to automatically rebuild and reload web applications when source files change, streamlining the development workflow. This reduces manual testing and speeds up iteration cycles, especially in agile environments.
Data scientists can set up entr to run Python scripts or Jupyter notebooks when data files or code are modified, ensuring tests execute immediately. This helps maintain data quality and model accuracy in real-time analytics projects.
DevOps engineers can use entr to trigger deployment scripts or configuration checks when infrastructure files change, enhancing automation in CI/CD pipelines. This minimizes downtime and ensures consistent environments across servers.
Web administrators can employ entr to regenerate static sites or clear caches when content files are updated, improving site performance and user experience. This is useful for blogs, e-commerce platforms, and news websites.
Offer entr as part of a cloud-based development platform, charging subscription fees for enhanced features like team collaboration and analytics. This model targets enterprises seeking integrated DevOps solutions.
Provide consulting services to integrate entr into clients' existing workflows, with revenue from project-based fees and ongoing support contracts. This caters to organizations needing tailored automation setups.
Develop and sell online courses or workshops on using entr for automation, generating revenue from course sales and certification exams. This appeals to individual developers and teams upskilling in DevOps.
💬 Integration Tip
Run entr in the background using process tools to avoid blocking the terminal, and combine it with version control commands like git for efficient file tracking.
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