I'm trying to grab only matching lines from a file using grep. The problem is that, when for example I use the following expression:
grep -w AFFX-KIT-000088 textfile
it will return:
However, I only want the exactly matching expression AFFX-KIT-000088. I have already trying -F -E and quoting. The textfile where I need to grep the lines is very big and I can not modify it (this also means I need an answer that doesn't involve many steps as it would take forever to process).
The file is actually very big and has many columns (not only the one I'm using for grep).