How can I delete the last occurrence of a pattern in a file using a grep/awk/bash/etc? : <p>What is the easiest way to delete the last occurrence of a pattern in a file using a grep/awk/bash/etc? For example, I have a file in which the expression "hello world" appears multiple times and I would like to delete the entire line or just the last time "hello world" occurs. Thanks! </p>
