snippetbashTip

sum — Compute checksums and the number of blocks for a file. A predecessor to the more modern `cksum`. Mor

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the sum command: Compute checksums and the number of blocks for a file. A predecessor to the more modern cksum. More information: <https://www.gnu.org/software/coreutils/manual/html_node/sum-invocation.html>.

Solution

sum — Compute checksums and the number of blocks for a file. A predecessor to the more modern cksum. More information: <https://www.gnu.org/software/coreutils/manual/html_node/sum-invocation.html>.

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 {{[-s|--sysv]}} {{path/to/file}}

Code Snippets

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 {{[-s|--sysv]}} {{path/to/file}}

Context

tldr-pages: common/sum

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