> Danny Braniss wrote: > >> $ mkfifo /var/tmp/foo > >> $ buffer -i /var/tmp/foo # misc/buffer > >> # in another console: > >> $ echo hi > /var/tmp/foo > >> > >> buffer prints hi and exits. I want it to keep reading and printing > >> indefinitely. > >> > >> Further experimentation revealed that I need two writers: one dummy > >> writer that just keeps /var/tmp/foo open for writing, and the other > >> doing the "real work". This way buffer wouldn't exit. But how to emulate > >> the dummy writer? It itself needs to block on something to keep > >> /var/tmp/foo open. Any clean way to do this in shell? Maybe the solution > >> is quite simple but isn't at the tip of my tongue. > >> > >> Thanks. > > > > too easy > > n csh: > > while 1 > > buffer -i /var/tmp/foo > > end > > or in sh: > > while true; do > > buffer -i /var/tmp/foo > > done > > > > > Thanks, but I should have said that buffer must always run to never miss > > any data. > > The reason being that buffer's output gets fed into another program that > shouldn't be restarted.
use 'tail -f' instead of 'buffer -i' then, or place the while in file and execute that. BTW, buffer was written way back when memory was measured in kilobytes and the ethernet was 10 mgb, so things have changed a bit, and its effectivness is questionable :-) danny _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
