Print all Host on local network

Shell Programming and Scripting
1

Hello guys,

I would like to develop a script which takes a host name as argument and displays a message whether the host is on the local network or not. How can I accomplish that? Is there a file or command that I can use to list all host on the local network? :confused:

2

you can ping the host can compare it to you ip. If is is different than it is not local.

3

But this involves IP addresses, or is that also possible with a string host name i.e "UNIX01"?

4

This pertains to linux machines, may be different on others:
arp -a dumps your machine's "Address Resolution Protocol" cache, i.e. your active connections.
ping -b pings the entire local network BUT machines have to be setup to answer.

5

Hi,

You can try this;

$ for ip in `echo '[1+pd254>aq]sa0 1-lax' | dc`; do ping -c 1 10.176.128.$ip>/dev/null; [ $? -eq 0 ] && echo "10.176.128.$ip UP" ; nslookup 10.176.128.$ip || : ; done

Where the XXX.XXX.XXX is your first three octets.

Regards

Dave