tool to interactively filter chatty command output

 prolix launches a command and captures its standard output and error,
 suppressing uninteresting lines according to a pattern. Yet unlike grep -v,
 prolix is an interactive program: When you find that the output you're being
 shown is still too verbose, simply hit enter and add additional suppression
 patterns. Suppression patterns can be full or substring line matches as well
 as regular expressions. You can also apply substitutions to lines, for example
 shorten overly chatty fields.