One of the first grep habits I developed was to stop assuming I knew how something was capitalized. Rather than guess, I just let grep handle it for me. That’s where -i comes in. It tells grep to ...

The grep command is regarded as one of the most essential building blocks of command line automation. It is a search tool that can be used to perform basic text filtering and processing tasks on files ...

A key point to these tools (from a practical point ) is that they are very memory efficient and allow work on just a "line".