sar:tldr:ecc92

The command "sar -n DEV ${2} ${10}" is used to display network device activity statistics using the "sar" command on a Unix-like operating system.

Here is a breakdown of the command:

• "sar" is a command-line utility used for system resource monitoring and performance analysis.
• "-n DEV" is an option provided to the "sar" command, specifying that we want to display network device activity statistics.
• "${2}" and "${10}" are arguments passed to the command. In Unix-like systems, arguments are accessed using "$1", "$2", "$3", and so on. In this case, "${2}" represents the second argument passed to the command, and "${10}" represents the tenth argument.

So, the specific meaning of the command would depend on what values are provided as arguments when executing it. The second argument could be a network device name, and the tenth argument could be a time interval or a date range for which the network device activity statistics should be displayed.