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iostat:tldr:5144f
The given command is using the "iostat" command with a variable parameter "${2}".
The "iostat" command in Linux/Unix systems is used to monitor input/output (I/O) statistics for CPU, disks, and other I/O devices. It provides information about the CPU utilization, disk transfer rates, and other related statistics.
In this command, the "${2}" is a positional parameter that represents the second command-line argument passed to the script or command that uses this command. The curly braces "{}" are used to enclose the variable.
So, the specific behavior of the "iostat ${2}" command would depend on the context in which it is used and what value is passed as the second argument. The command will execute "iostat" with the value of the second argument, which could be a drive name, disk identifier, or any other valid parameter for the "iostat" command.