# A Function Without local Overwrote My Variable and rm -rf Deleted the Wrong Directory
📰 Medium · Programming
Learn how a function without local overwrote a variable and caused a catastrophic rm -rf command, and how to prevent similar disasters in your own code
Action Steps
- Write scripts with explicit variable declarations to avoid overwriting external variables
- Use absolute paths instead of relative paths to prevent directory deletion mistakes
- Test scripts in a safe environment before running them in production
- Implement robust error handling and logging mechanisms to detect and respond to issues quickly
- Regularly review and refactor code to ensure it remains maintainable and secure
Who Needs to Know This
Developers and DevOps engineers can benefit from this lesson to improve their scripting and deployment practices, and avoid similar mistakes that can have severe consequences
Key Insight
💡 Explicit variable declarations and careful path management can prevent disastrous script failures
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💡 Beware of functions without local overwriting your variables! 🚨 Use explicit declarations, absolute paths, and robust error handling to avoid catastrophic script failures 🚀
Key Takeaways
Learn how a function without local overwrote a variable and caused a catastrophic rm -rf command, and how to prevent similar disasters in your own code
Full Article
The deploy script had been running in production for four months without a problem. It built releases into a temp directory, ran some… Continue reading on Medium »
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