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Task: Regex Lookahead for 'Not Followed By' in grep

Task: Regex Lookahead for 'Not Followed By' in grep: a task in Terminal-Lego-15k (Harbor dataset). You need to use grep with a negative lookahead regex pattern to find all lines containing the string Ui. that are NOT followed by the letter L .

The task

You need to use `grep` with a negative lookahead regex pattern to find all lines containing the string `Ui.` that are **NOT** followed by the letter `L`.

Part of PrimeIntellect/Terminal-Lego-15k.