Query machine for hostname

Question

I want to be able to scan a network of servers and match IP addresses to hostnames.

I saw a lot of questions about this (with a lot of down votes), but none are exactly what I'm looking for.

So I've tried python's socket library socket.gethostbyaddr(ip). But this only returns results if I have a DNS setup or the IP-to-host mapping is in my hosts file.

I want to be able to ask a machine for their hostname, rather than querying DNS.

How can a query a Linux machine for their hostname?

Preferably using python or bash, but other ways are good too.

I think this question should be migrated to unix.stackexchange.com or superuser.com — Barranka
– Barranka, Commented Mar 12, 2014 at 16:56

rogue-one · Accepted Answer · 2014-03-12 16:55:55Z

3

You can remotely execute the command hostname command on these machines to acquire the Hostname

answered Mar 12, 2014 at 16:55

rogue-one

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6 Comments

Dan Over a year ago

That sounds perfect, can you elaborate please?

rogue-one Over a year ago

since your host are Linux based machines they support a command called hostname which will return the hostname of the machines.

Dan Over a year ago

Is there a way to execute that command without logging in to the machine?

Dark Falcon Over a year ago

You either run it over ssh (which is logging in), or install a server (a web server, perhaps?) which runs something that returns the hostname.

rogue-one Over a year ago

@dan08 ssh machinename hostname. You need key based authentication.

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