Tail a log-file over the network

tail -f error_log | nc -l 1234
Netcat is used to serve a log-file over a network on port 1234. Point a browser to the specified server/port combo to view log-file updates in real-time.

4
By: zlemini
2010-05-07 18:14:04

2 Alternatives + Submit Alt

What Others Think

That doesn't seem to work with my Firefox. How does netcat handle the http procol ?
dooblem · 489 weeks and 1 day ago
Sorry i should have mentioned i tested this on MacOS. Here is the Linux (Ubuntu) version: ( echo -e "HTTP/1.0 200 Ok\n\r"; tail -f error_log; ) | nc -lp 1234
zlemini · 489 weeks and 1 day ago
I did as you posted in your comment, but my nc man pages says that l and p cannot be used together, nc won't start; I'm on Ubuntu 10.04, my nc version is: OpenBSD netcat (Debian patchlevel 1.89-3ubuntu2)
Montecristo · 488 weeks and 3 days ago
I've taken the last version from sourceforge but it still doesn't work, when I point my browser to http://localhost:1234 it keeps loading...
Montecristo · 488 weeks and 3 days ago
there are two versions of netcat. One should be started with -l -p and another one without -p. Yeah, welcome to the unix world. This command doesn't work well because browser buffers some amount of data and if nothing is written to the transferred file nothing is shown. Additionally this command doesn't work with chrome browser.
ichbins · 343 weeks and 5 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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