In Linux, you can convert a list of IP addresses into DNS names, for example, by a simple script.
To do this, create an empty file with the extension .sh, make it executable and add the content to it:
#!/bin/sh
while read ip traf ; do
name=`host $ip|awk '{print $NF}'`
echo -e "$name\t$ip\t$traf"
done >name_ip_traf.lst <ip_traf.lst
Where ip_traf.lst is a file with a list of IP addresses that need to be converted to DNS names.
You can make it executable by the command:
chmod +rwx file.sh
Run the script in the directory where it is located by the command:
./file.sh
Or run by specifying the full path:
/dir/file.sh
After the startup, you must wait for a while or interrupt the execution by pressing CTRL+C.