reg-copy:tldr:46d43

The command "reg copy ${old_key_name} ${new_key_name}" is used to copy a registry key in a Windows operating system.

Here is a breakdown of the command:

• "reg" is a command-line tool used to interact with the Windows Registry.
• "copy" is the sub-command that specifies the action to be performed, which in this case is copying a registry key.
• "${old_key_name}" represents the name of the existing registry key that you want to copy. The "${}" syntax is often used to denote variables in command-line scripts, so you would replace "${old_key_name}" with the actual name of the key you want to copy.
• "${new_key_name}" represents the name of the new registry key that will be created as a copy. Again, you would replace "${new_key_name}" with the desired name for the new key.

To use this command, you would open the command prompt or PowerShell, and then replace the placeholder variables with the correct key names. For example, if you want to copy a key called "Software\MyApp" to a new key named "Software\MyAppBackup", the command would be:

reg copy "HKEY_CURRENT_USER\Software\MyApp" "HKEY_CURRENT_USER\Software\MyAppBackup"

Note that the command requires administrative privileges to modify the registry, so you might need to run it with elevated permissions.