Coding⏱️ 2 min read📅 2026-06-03

How to Fix: Getting an "ambiguous redirect" error

The error occurs because the variable $OUPUT_RESULTS is not defined before being used in the redirection operator (>>). To fix this, define the variable before using it.

Quick Answer: Define $OUPUT_RESULTS as an empty string or a valid file path before using it.

The "ambiguous redirect" error in Bash scripting occurs when the shell is unable to determine which redirection operator to use. This can happen due to the presence of multiple redirection operators in a single pipeline or command.

⚠️ Common Causes

  • Using multiple redirection operators in a single pipeline or command.

🔧 Proven Troubleshooting Steps

Method 1: Variable Expansion

  1. Step 1: Use the expansion operator ('<>') to evaluate the variable expansions before redirection.

Method 2: Redirection Order

  1. Step 1: Ensure that the redirection operators are in the correct order, with the most specific operator first.

💡 Conclusion

By following these methods, you can resolve the "ambiguous redirect" error and improve the performance of your Bash scripts.

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