what program command saves a copy of a file...

The program command that saves a copy of a file under a different name is “Save As”.

Quick Scoop

When you choose Save As in most programs (Word, Excel, Photoshop, etc.), you can:

• Give the file a new name.
• Choose a different folder/location.
• Often pick a different file format (like .docx to .pdf).

This keeps:

• The original file intact.
• A new copy saved under the name and location you choose.

Commands like Save , Copy , or Duplicate might appear in some apps, but the standard and most widely correct answer to “what program command saves a copy of a file under a different name?” is Save As.