Examples on how to stream some logs from the 'current' directory through a filter. You could use grep or awk to filter to specific lines

filtered_bro_log_following.sh

# Notice tail
stdbuf -o0 tail -n+1 -F notice.log \
	| stdbuf -o0 bro-cut -d ts note msg \
	| awk -F'\t' '{ print "================\n" $1, $2"\n", $3 }'

# HTTP Tail
stdbuf -o0 tail -n+1 -F http.log \
	| stdbuf -o0 bro-cut id.orig_h uri user_agent \
	| awk -F'\t' '{ print "=================\n" $1, $2"\n", $3 }'