CmdID / Commands
Compute checksums and the number of blocks for a file. tldr-pages
On several platforms
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Compute checksums and the number of blocks for a file. A predecessor to the more modern cksum.
Compute a checksum with BSD-compatible algorithm and 1024-byte blocks
sum path/to/file
Compute a checksum with System V-compatible algorithm and 512-byte blocks
sum --sysv path/to/file