| To look for a specific filename extension, we can use the SELECTED DIRECTORY command. |
| Directions: |
| 1. Type: dir \*.bat and press Enter. |
| 2. Only the files with the .bat extensions are listed. |
| 3. Press the F3 key. |
| 4. Backspace three times. |
| 5. Type: sys and press return. |
| 6. Now only the files with the .sys extensions are listed. |