Grep Invert Search

We can invert search in grep by using -v, --invert-match argument, -v only displays lines which does not have pattern in it.

Invert the sense of matching, to select non-matching lines.

Example

$ seq 5 | grep -v 3
1
2
4
5

Here, we are asking grep to hide pattern, which is "3" in this case, and display everything else.

Source: Linuxize