sha512sum:tldr:63708
sha512sum: Only show a message when verification fails, ignoring missing files.
$ sha512sum --ignore-missing --check --quiet ${filename-sha512}
try on your machine
The command sha512sum is used to calculate the SHA-512 hash value of a file. Here is a breakdown of the given command:
sha512sum: This is the command itself.--ignore-missing: This option tellssha512sumnot to complain or display error messages for missing files. If a file specified in the command is not found, it will be ignored.--check: This option is used to verify the integrity of files by comparing their SHA-512 hash values with the ones provided.--quiet: This option instructssha512sumto suppress normal output and only display error messages if any.${filename-sha512}: This is a variable that represents the file name with its corresponding SHA-512 hash value appended or stored in a separate file. The actual file name should be substituted in place of${filename-sha512}.
In summary, the given command is used to quietly verify the integrity of a file by comparing its calculated SHA-512 hash value with the one provided. If any file specified is missing, it will be ignored without displaying any error messages.
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.