Pass stdin into Unix host or dig command

Question

Let\'s say I have a list of IPs coming into a log that I\'m tailing:

1.1.1.1
1.1.1.2
1.1.1.3 

I\'d like to easily resolve them to host names. I

Answer 1

You could also use the read builtin:

tail -f access.log | while read line; do host $line; done