Blockdev

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blockdev is a command that calls specific block-device ioctls, which perform specific tasks inside the operating system. It is useful for causing these actions from a shell script.

Synopsis

   blockdev [-1] [-v] command ... device...
   blockdev --report device...
   blockdev -h|-v

Example Commands

See the manual page for a complete list.

  • --getpbsz get the physical block size
  • --getss get the logical sector size in bytes
  • --getsz get the size in 512-byte sectors

Provided by

Most (all?) Linux distributions incorporate this from the [util-linux] project.

External Links

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