ping:tldr:666e0

The command ping -c ${count} ${host} is used to check the connectivity between your computer and a specified host (which can be an IP address or a domain name).

Here's a breakdown of the command's components:

• ping: It is a command-line utility on most operating systems that sends network packets ("echo requests") to a specific host and waits for a response ("echo reply"). It's commonly used to measure the round-trip time (RTT) and to check if a host is reachable.

• -c ${count}: This option specifies the number of ping packets or echo requests to be sent. The ${count} is a placeholder for the actual number you provide. For example, if you replace ${count} with 5, the command will send 5 echo requests and wait for 5 echo replies.

• ${host}: This represents the target host you want to ping. It can be either an IP address (e.g., 192.168.1.1) or a domain name (e.g., www.example.com). Replace ${host} with the actual IP address or domain name you wish to ping.

By executing this command in a terminal or command prompt, you can determine if the specified host is reachable and see information about the round-trip time and any packet loss that may occur during the process.