unzstd:tldr:cebfe

The command "unzip --list ${filename-zst}" is used to view the contents of a compressed archive file with the ".zst" extension.

Here is a breakdown of the command:

• "unzip" is the command used to extract files from an archive.
• "--list" is an option or flag that instructs the "unzip" command to display the contents of the archive file without extracting them.
• "${filename-zst}" is a variable used to specify the name of the archive file you want to view. The "-zst" part represents the extension of the archive file. The dollar sign ($) indicates that it's a variable, and the curly braces ({}) enclose the variable name.

So, when you run this command, it will display a listing of the files and directories contained within the archive file with the specified name and ".zst" extension, without actually extracting them.