sha1sum

all

Calculate SHA1 cryptographic checksums.

Options (1)

-c, --checkboolean

Read a file of SHA1 checksums and filenames and verify all files have matching checksums

Example: sha1sum {{[-c|--check]}} {{path/to/file.sha1}}

Calculate the SHA1 checksum for one or more files

sha1sum path/to/file1 path/to/file2 ...

Calculate and save the list of SHA1 checksums to a file

sha1sum path/to/file1 path/to/file2 ... > path/to/file.sha1

Calculate a SHA1 checksum from `stdin`

command | sha1sum

Read a file of SHA1 checksums and filenames and verify all files have matching checksums

sha1sum [-c|--check] path/to/file.sha1

Only show a message for missing files or when verification fails

sha1sum [-c|--check] --quiet path/to/file.sha1

Only show a message when verification fails, ignoring missing files

sha1sum --ignore-missing [-c|--check] --quiet path/to/file.sha1

Check a known SHA1 checksum of a file

echo known_sha1_checksum_of_the_file path/to/file | sha1sum [-c|--check]