snippetbashTip

shasum — Calculate SHA cryptographic checksums. More information: <https://manned.org/shasum>.

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

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Problem

How to use the shasum command: Calculate SHA cryptographic checksums. More information: <https://manned.org/shasum>.

Solution

shasum — Calculate SHA cryptographic checksums. More information: <https://manned.org/shasum>.

Calculate the SHA1 checksum for one or more files:

shasum {{path/to/file1 path/to/file2 ...}}

Calculate the SHA checksum for one or more files with the specified algorithm:

shasum --algorithm {{1|224|256|384|512|512224|512256}} {{path/to/file1 path/to/file2 ...}}

Calculate a SHA1 checksum from stdin:

{{command}} | shasum

Calculate and save the list of SHA256 checksums to a file:

shasum --algorithm 256 {{path/to/file1 path/to/file2 ...}} > {{path/to/file.sha256}}

Read a file of SHA checksums and filenames and verify all files have matching checksums (the algorithm will be automatically detected):

shasum {{[-c|--check]}} {{path/to/file}}

Only show a message for missing files or when verification fails:

shasum {{[-c|--check]}} --quiet {{path/to/file}}

Only show a message when verification fails, ignoring missing files:

shasum --ignore-missing {{[-c|--check]}} --quiet {{path/to/file}}

Check a known SHA checksum of a file:

echo {{known_sha_checksum_of_the_file}} {{path/to/file}} | shasum {{[-c|--check]}}

Code Snippets

Calculate the SHA1 checksum for one or more files

shasum {{path/to/file1 path/to/file2 ...}}

Calculate the SHA checksum for one or more files with the specified algorithm

shasum --algorithm {{1|224|256|384|512|512224|512256}} {{path/to/file1 path/to/file2 ...}}

Calculate a SHA1 checksum from `stdin`

{{command}} | shasum

Calculate and save the list of SHA256 checksums to a file

shasum --algorithm 256 {{path/to/file1 path/to/file2 ...}} > {{path/to/file.sha256}}

Read a file of SHA checksums and filenames and verify all files have matching checksums (the algorithm will be automatically detected)

shasum {{[-c|--check]}} {{path/to/file}}

Context

tldr-pages: common/shasum

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