Select the text on the line below by dragging across it. Don't include the blank space at the end of the line. Only the text should be highlighted.
ls -@Oaeln
Copy the selected text to the Clipboard (command-C).
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V), then press the space bar.
Now switch to the Finder and and select the item(s) that are causing the problem. Drag the items into the Terminal window. More text will be added to what you entered.
Click in the Terminal window to activate it, then press return.
Post any lines of output that appear below what you entered — the text, please, not a screenshot.