Send the following on WhatsApp
Continue to ChatHow to message other users logged in to a Ubuntu/CentOS server? https://www.ipaddressguide.org/how-to-message-other-users-logged-in-to-a-ubuntu-centos-server/
How to message other users logged in to a Ubuntu/CentOS server? https://www.ipaddressguide.org/how-to-message-other-users-logged-in-to-a-ubuntu-centos-server/