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linuxipmappinghostnameipv4

How to request IPv4 address from a machine name?

In my linux cluster, I've got a bunch of hostnames, while my network management log shows ip addresses(they changes sometimes according to dns).

My question is: how to quickly find out the ipv4 of some hostname, without using "ping xxxxx" to get ip address and Ctrl+c to stop it. I wish to write a simple script like:

myCommand hostname1
myCommand hostname2
myCommand hostname3
myCommand hostname4
myCommand hostname5

Which will print hostname to ipaddress mapping for me(for hostname1-5)

So how to write this "myCommand" command or shell script? Thanks.

Solution

  • Use host tool from bind-tools:

    $ host -4 -t A stackoverflow.com
stackoverflow.com has address 151.101.129.69
stackoverflow.com has address 151.101.1.69
stackoverflow.com has address 151.101.193.69
stackoverflow.com has address 151.101.65.69

    Or dig tool from the same package:

    $ dig -4 -t A stackoverflow.com +short
151.101.129.69
151.101.1.69
151.101.193.69
151.101.65.69