The `ping -i` command is a networking utility used to measure the round-trip time for packets sent from a source host to a destination host. It reports the minimum, average, maximum, and standard deviation of the round-trip times in milliseconds. The `-i` option specifies the time interval between sending packets, in seconds.
The `ping -i` command is a valuable tool for network administrators and IT professionals. It can be used to troubleshoot network problems, monitor network performance, and measure network latency. By specifying the `-i` option, users can customize the frequency of the ping requests, allowing them to fine-tune the command to meet their specific needs.