write to a file after piping output from tail -f through to grep

Question

I\'m looking to write to a file after piping output from tail -f through to grep. Say,write to a file \"temp\" for all lines with \"Playing:\" within in error_log \"FreeSwit

Answer 1

Maybe you have an issue with buffering? See BashFAQ: What is buffering?

You could e.g. try:

tail -f /var/lof/freeswitch/freeswitch.log | grep --line-buffered "Playing:" > temp