jupyter_custom_shortcuts.json

{"shortcuts": 
    [
        {
            "command": "runmenu:restart-and-run-all",
            "keys": [
                "9", "9"
            ],
            "selector": "[data-jp-kernel-user]:focus"
        },
        {
            "command": "notebook:restart-and-run-to-selected",
            "keys": [
                "8", "8"
            ],
            "selector": "[data-jp-kernel-user]:focus"
        },
         {
            "command": "kernelmenu:restart-and-clear",
            "keys": [
                "0", "0"
            ],
            "selector": "[data-jp-kernel-user]:focus"
        },
        {
            "command": "kernelmenu:shutdown",
            "keys": [
                "K", "K", "0"
            ],
            "selector": "[data-jp-kernel-user]:focus"
        }
    ]
}