Host name from IP address

[Michael Jewett]

Good morning,

I was curious if anyone knows a way to find out the hostname from the 
hosts.cfg if I know the IP address.

For instance I have a program that I wrote that runs on switch 1 that 
returns me an IP address of switch 2 and its status.  I would then like 
the get the name from Nagios's configs for switch 2.  Is this possible, 
without going through the entire hosts.cfg file?  If not, has anyone 
else written something to do the similar function?

Thanks,

Michael

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