sha512sum:tldr:470de
This command uses the ${command} placeholder to represent any command that can generate an output, and pipes the output of that command to the sha512sum utility.
The sha512sum utility calculates the SHA-512 hash value of the input provided to it. A hash value is a unique alphanumeric representation of a data input. SHA-512 is a cryptographic hash function that generates a 512-bit hash value.
By using the pipe (|) symbol, the output of the ${command} is passed as input to the sha512sum command. The sha512sum then calculates the hash value of the input, which could be a file, a string, or any data generated by the ${command}.
The resulting hash value, usually a long string of numbers and letters, is displayed in the terminal as the output of this command.