duplicate line in vscode ubuntu code example

Example 1: vs code copy a link down

On Windows: Shift + Alt + Up/Down.
On Mac: Shift + Option + Up/Down.
On Ubuntu: Ctrl + Shift + Alt + Up/Down.

Example 2: vscode duplicate line

Shift + Alt + Any Up 0r Down Keys

Example 3: ubunutu duplicate shortcuts

{ "key": "shift+alt+down",        "command": "editor.action.copyLinesDownAction",
                                     "when": "editorTextFocus" },
{ "key": "shift+alt+up",          "command": "editor.action.copyLinesUpAction",
                                     "when": "editorTextFocus" },