Nc ??? c'est quoi c'est pas une commande ip ça ça doit etre spécifique à une distrib en particulier et donc à proscrire !

tu peux peut etre plustot faire du style

rsh ..... "commande" > fichier

rsh ..... "commande" | tail -f

Tu dois installer le paquage netstat

johand@horus:~$ dpkg -L netcat |grep nc
/bin/nc
/usr/share/doc/netcat/examples/contrib/ncmeter
/usr/share/doc/netcat/examples/scripts/ncp
/usr/share/man/man1/nc.1.gz
johand@horus:~$ nc -h
[v1.10]
connect to somewhere:   nc [-options] hostname port[s] [ports] ...
listen for inbound:     nc -l -p port [-options] [hostname] [port]
options:
        -c shell commands       as `-e'; use /bin/sh to exec [dangerous!!]
        -e filename             program to exec after connect [dangerous!!]
        -b                      allow broadcasts
        -g gateway              source-routing hop point[s], up to 8
        -G num                  source-routing pointer: 4, 8, 12, ...
        -h                      this cruft
        -i secs                 delay interval for lines sent, ports scanned
        -l                      listen mode, for inbound connects
        -n                      numeric-only IP addresses, no DNS
        -o file                 hex dump of traffic
        -p port                 local port number
        -r                      randomize local and remote ports
        -q secs                 quit after EOF on stdin and delay of secs
        -s addr                 local source address
        -t                      answer TELNET negotiation
        -u                      UDP mode
        -v                      verbose [use twice to be more verbose]
        -w secs                 timeout for connects and final net reads
        -x tos                  set Type Of Service
        -z                      zero-I/O mode [used for scanning]
port numbers can be individual or ranges: lo-hi [inclusive];
hyphens in port names must be backslash escaped (e.g. 'ftp\-data').

Exemple

johand@horus:~$ echo -e "HEAD /forum HTTP/1.0 \n\n" | nc www.commentcamarche.com 80
HTTP/1.1 302 Found
Date: Tue, 31 Jan 2006 08:19:04 GMT
Server: Apache
Location: http://www.commentcamarche.net/forum
Connection: close
Content-Type: text/html; charset=iso-8859-1

Merci beaucoup