If you want to filter for hooks you can just leave out the -v. It will exclude every line others than the ones that include the pattern. For example:
./nodebb dev | grep "plugins/fireHook] filter:parse.post"
This would only show you lines that include this pattern. Again you can combine multiple patterns, just provide each via the -e argument. For example:
./nodebb dev | grep -e "plugins/fireHook] filter:parse.post" -e "plugins/fireHook] filter:users.get"
