[Home](./index.md) > [@mike-north/devcert-patched](./devcert-patched.md) > [UserInterface](./devcert-patched.userinterface.md) > [warnChromeOnLinuxWithoutCertutil](./devcert-patched.userinterface.warnchromeonlinuxwithoutcertutil.md) ## UserInterface.warnChromeOnLinuxWithoutCertutil() method Deliver a warning to the user without using certutil (linux only) Signature: ```typescript warnChromeOnLinuxWithoutCertutil(): void | Promise; ``` Returns: `void | Promise`