Linux non-blocking fifo (on demand logging)

Question

I like to log a programs output \'on demand\'. Eg. the output is logged to the terminal, but another process can hook on the current output at any time.

The classic

Answer 1

BusyBox often used on embedded devices can create a ram buffered log by

syslogd -C

which can be filled by

logger

and read by

logread

Works quite well, but only provides one global log.