a server simillar to discard

[Adek336]

hi is there some sort of server that is installed in linux by default and writes to standard output what it receives over the net?
or is there some simple one-line implementation in some popular language?

[chase]

What do you mean by "receives over the net?" Pick an OSI layer. Maybe you want http://www.wireshark.org/

[Brynet-Inc]

Well, the discard service.. almost always unused these days, sends all received data to "/dev/null".

Are you incapable of writing a program that can do something similar?

http://www.beej.us/guide/bgnet/

[Adek336]

A server that accepts data over TCP/IP and writes it on screen and the discard service doesn't do that. There are a lot of strange programs installed by default on linuces so it'd be interesting to know it, if there is none I'll have to write one but now another question arises- perhaps there is some clever implementation in some particularly fitted language, or maybe a way to do that as a bash command with use of pipes or something like that.

[chase]

tcpdump

[Adek336]

tcpdump neither, I mean a server to which the client has to connect through TCP, it seems there's no such thing installed by default so I'll make my own

[blound]

netcat, but seriously its a 10 line program