How to 'grep' a continuous stream?

Question

Is that possible to use grep on a continuous stream?

What I mean is sort of a tail -f command, but with grep on t

Answer 1

Use awk(another great bash utility) instead of grep where you dont have the line buffered option! It will continuously stream your data from tail.

this is how you use grep

tail -f  | grep pattern

This is how you would use awk

tail -f  | awk '/pattern/{print $0}'