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sar: Report I/O and transfer rate issued to physical devices, one per second (press CTRL+C to quit).
$ sar -b ${1}
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The command sar -b ${1} is used to collect and report system performance counters related to I/O (input/output) activities.


  • The "sar" command stands for "system activity reporter," and it is a command-line utility in Unix-like operating systems that is used for monitoring system performance.
  • The "-b" option specifies that the command should display I/O-related statistics.
  • ${1} is a placeholder that represents the first command-line argument passed to the script or command. By placing ${1} after the "-b" option, it provides a way to specify a specific filename or device as an argument to the command.
This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.
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