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ping:tldr:f59f8
The command "ping -n ${host}" is used to send a network request called an Internet Control Message Protocol (ICMP) Echo Request to a specific host, where "${host}" is a placeholder for the IP address or hostname of the target host.
When this command is executed, it initiates a process called a ping test, which measures the response time between the sender (your computer) and the recipient (the target host). The "-n" option specifies the number of ICMP Echo Requests to send. In this case, "${host}" will be replaced with the actual IP address or hostname you provide.
The ping test works by sending a small data packet to the target host, and the host is expected to reply with an ICMP Echo Reply packet. This process helps determine if the target host is reachable and measures the time it takes for the round-trip communication.
Overall, the "ping -n ${host}" command is a basic network troubleshooting tool that allows you to check the connectivity and response time to a specific IP address or hostname.