sha512sum:tldr:441b8

sha512sum: Read a file of SHA512 sums and filenames and verify all files have matching checksums.

sha512sum

$ sha512sum --check ${filename-sha512}

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The command sha512sum --check ${filename-sha512} is used to verify the integrity of a file by checking its SHA-512 hash value against a provided hash value. Here's a breakdown of the command:

sha512sum: This is the name of the command-line utility used to calculate and verify SHA-512 checksums. It reads files and computes their SHA-512 cryptographic hash.
--check: This option instructs sha512sum to check the calculated hashes against the provided hash values.
${filename-sha512}: This is a variable that represents the filename and its corresponding SHA-512 hash value. Typically, you would replace ${filename-sha512} with the actual filename and its corresponding SHA-512 hash file.

When you run the command, sha512sum will calculate the SHA-512 hash value of the specified file and compare it with the provided hash value. If the calculated hash matches the provided hash, it indicates that the file has not been tampered with and its integrity is intact. If the hashes do not match, it suggests that the file has been modified or corrupted.

This command is often used for verifying the integrity of downloaded files, ensuring they have not been tampered with during transfer or storage.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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