71 words (approximately 1 min)

overview

Use checksums to verify file integrity by reading their SHA hash digest.

use

shasum [OPTIONS] FILE # reads SHA-1 sum for FILE

Options:

  • --algorithm <n> # Use hash algorith n where n is 1 (default), 224, 256, 384, 512, 512224, 512256.
    • Note: 512224 is 512/224 and 512256 is 512/256.
  • --binary Read in binary mode (default = --text mode)
  • --UNIVERSAL Read in universal newlines mode (produces the same digest on Windows/Unix/Mac)