Or what I find myself doing often: cat “filename.txt” Up | grep “thing” Up | grep -v “not thing” Up | grep -v “other thing” Etc. it’s just easier to build

Or what I find myself doing often: cat “filename.txt” Up | grep “thing” Up | grep -v “not thing” Up | grep -v “other thing” Etc. it’s just easier to build this way even if the initial cat is unnecessary.