Karmen
Reputation: 377
Why does grep -w take a lot longer than grep?
Why does grep -w take so much longer than a simple grep?
Upvotes: 1
Views: 44
Answers (1)
flowit
Reputation: 1442
grep -w matches whole words, not just 'hits' like the normal grep. This is achieved by applying regular expressions on the input. Regular expressions are by nature a really expensive technique and should always be used with caution.
Upvotes: 2
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