Subject: Re: bug#31913: A bug with grep

From: Paul Eggert <[email-masked]>
Date: Thu, 21 Jun 2018 14:21:06 -0700

On 06/20/2018 04:32 AM, Onur Demir wrote:
> Althought i use grep with -i parameter it can not realise the difference
> between i and I letter

Yes, grep -i is doing what it's supposed to: it's ignoring case 
distinctions so that "listen" in the pattern matches "LISTEN" in the data.