sha512sum:tldr:46953
The command "sha512sum" is used to calculate the SHA-512 (Secure Hash Algorithm 512-bit) checksum of one or multiple files.
In the given command, "${filename1 filename2 ---}" represents a placeholder for the file names or paths that need to be provided as arguments to the command. You can replace "${filename1 filename2 ---}" with the actual file names or paths.
For example, if you have two files named "file1.txt" and "file2.txt" in the current directory, you would use the command: "sha512sum file1.txt file2.txt". This would calculate the SHA-512 checksum for both files and display the results.
The "---" in the placeholder indicates that you can add more file names or paths after it if needed. It is a convention used to indicate the end of options and the start of file names.