Sometimes you gotta run a command lots of times. So let a loop do it. Here’s one example:
for ip in $(cat ips.txt); do
nslookup $ip >> nslookups.txt
This will take a file of IP addresses (ips.txt) and run nslookup on each IP and output the results to nslookups.txt. Or just remove the >> nslookups.txt if you want the output to the screen.
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