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Task: Filter Lines Not Containing a Specific Word Using Regular Expressions

Task: Filter Lines Not Containing a Specific Word Using Regular Expressions: a task in Terminal-Lego-15k (Harbor dataset). You need to use grep with a regular expression pattern to match and output all lines from an input file that do not contain the word hede .

The task

You need to use `grep` with a **regular expression pattern** to match and output all lines from an input file that do **not** contain the word `hede`.

Part of PrimeIntellect/Terminal-Lego-15k.