b2sum:tldr:f0e78
b2sum: Only show a message for missing files or when verification fails.
$ b2sum --check --quiet ${filename-b2}
try on your machine
This command is composed of three words and three options.
- "b2sum" is the name of the utility or command being executed. It is a program used to compute and check cryptographic hash values.
- "--check" is an option that specifies the intention to check the cryptographic hash values of a file.
- "--quiet" is an option that silences any output and only displays relevant information or errors.
- "${filename-b2}" is a variable or placeholder that represents the actual file name or path. It is enclosed in curly brackets with a default value of "b2" provided after a hyphen, indicating that if the variable is empty or undefined, it will use "b2" as the file name to check.
Overall, this command is used to perform a quiet check of the cryptographic hash value for a specific file (filename) using the b2sum utility.
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.