I think it was posted a while back; it was an interesting enough article that it stuck in my head and I was able to find it pretty easily by googling "why is gr

I think it was posted a while back; it was an interesting enough article that it stuck in my head and I was able to find it pretty easily by googling "why is grep so fast?". Ah, here it is: https://news.ycombinator.com/item?id=2393587 https://news.ycombinator.com/item?id=2393587 And again! https://news.ycombinator.com/item?id=6813937 https://news.ycombinator.com/item?id=6813937 And duplicate submissions are listed in those postings.