Re: [microblaze-uclinux] netcat - from busybox or network apps ?

["A. Arthur Mohr" <adimbox-uclinux@xxxxxxxxxxxx>]

Hi Ujwal !
  
  Are you asking what is netcat, or what is my command ?
  
  netcat is a tool for 'telnet', but way much better. it provides stuff  like port scanner, port listening, connection, etc etc etc.
  
  my command should :
  the 1st - listen in the port 1234 UDP
  the 2nd - listen in the localhost port 5060
  
  Well, I tested netcat from busybox, seems that it have no UDP support :
  
  # nc -u -l 1234
  nc: illegal option -- u
  BusyBox v1.00 (2006.06.08-10:06+0000) multi-call binary
  
  Usage: nc [OPTIONS] [IP] [port]
  
  Netcat opens a pipe to IP:port
  
  Options:
           -l               listen mode, for inbound connects
          -p PORT         local port number
          -i 
 SECS         delay interval m  to exec after connect (dangerous!)
  
  #
  
  
  But, in the bottom end, looks like 'net apps' netcat works, just the command line is slightly different :
  
  
  # nc 127.0.0.1 -l -u -p 5060
  instead 
  # nc -l -u 5060 (wich is easier, but at least it works !!)
  
  It wont work using 'localhost', it needs a IP number, and the IP must come first, otherwise it will shalt 'no such file' thing.
  
  

Ujwal <ujwal.mailinglist@xxxxxxxxx> escreveu:

Hi,

What does that netcat do?

Regards,
Ujwal

On 6/8/06, A. Arthur Mohr <adimbox-uclinux@xxxxxxxxxxxx > wrote:

Hi there !

Which netcat should I use : from busybox or from network applications ?

I ask because I used the one in net apps, and when I tried to run it, it said :

#nc -u -l 1234
"forward host lookup failed: no such file or directory"

#nc localhost 5060
"forward host lookup failed: no such file or directory"

I though the netcat in net apps should be the 'better' choice. I'm not sure now. After that I saw 'nc' in busybox, but had no time to use it ...

Or did I miss something ?

Regards

Arthur

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