msg

Send a message to a user or session. More information: https://learn.microsoft.com/windows-server/administration/windows-commands/msg.

• Send a message to a specified user or session:

msg username|session_name|session_id message

• Send a message from stdin:

echo "message" | msg username|session_name|session_id

• Send a message to a specific server:

msg /server:server_name username|session_name|session_id

• Send a message to all users of the current machine:

msg *

• Set a delay in seconds for a message:

msg /time:10