[Home](./index.md) > [bitburner](./bitburner.md) > [NS](./bitburner.ns.md) > [atExit](./bitburner.ns.atexit.md) ## NS.atExit() method Add callback function when the script dies Signature: ```typescript atExit(f: () => void): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | f | () => void | | Returns: void ## Remarks RAM cost: 0 GB NS2 exclusive Add callback to be executed when the script dies.