betty:tldr:aa042

The command "betty unarchive ${archive-tar-gz} to ${path-to-directory}" is using the program or script named "betty" to unarchive a compressed TAR file to a specific directory.

Here's a breakdown of the command:

• "betty": This is the name of the program or script that is being executed.
• "unarchive": This is the action or task that the program or script should perform.
• "${archive-tar-gz}": This is a placeholder or variable that should be replaced with the actual name or path of the TAR file you want to unarchive. The ".tar.gz" extension suggests that it is a compressed TAR file.
• "to": This keyword is used to indicate the destination or target location.
• "${path-to-directory}": This is another placeholder or variable that should be replaced with the actual path or directory where you want the contents of the TAR file to be extracted to.

In summary, the command instructs the "betty" program or script to unarchive the specified TAR file to the given directory.