The "copy" command will copy the indicated file, and make the replica file where you designate.
A command-line interface (CLI) is a means of interacting with a device or computer program with successive lines of text. Typically a user or client sends characters to a process or device, and the process or device responds with lines of text as well. Such access was first provided by computer terminals starting in the mid-1960s. This provided an interactive environment not available with punched cards or other input methods.
Operating system command-line interfaces are often implemented with command-line interpreters or command-line processors. Programs with command-line interfaces are generally easier to automate via scripting. Many software systems implement command-line interfaces for control and operation. This includes programming environments and utility programs.
Today, many users rely upon graphical user interfaces and menu-driven interactions. However, some programming and maintenance tasks may not have a graphical user interface and use a command line. Alternatives to the command-line interface include text-based user interface menus (for example, IBM AIX SMIT), keyboard shortcuts, and various desktop metaphors centered on the pointer (usually controlled with a mouse). Examples of this include the Microsoft Windows, DOS Shell, and Mouse Systems PowerPanel. Command-line interfaces are often implemented in terminal devices that are also capable of screen-oriented text-based user interfaces that use cursor addressing to place symbols on a display screen.