> > Note that the `grep -v` is casting a wider net than it seems at first > > glance. The `.` matches any character, not just a period ".". To > > tighten the matching and make `.` match just a ".", you can use `grep > > -vF`. > > > > Yes, `grep -vF` is very important for the correctness of the test. > Correct it, I still have to use `grep -v`, but I need to change the '.' to `\.` .
