The message will be broadcasted to all users that are currently logged in. To see all the logged-in users, run the w or who command. The wall command will wait for you to enter text. When you’re done typing the message, press Ctrl+D to end the program and broadcast the message.

How do you send a message to all users in Linux?

Sending message to all users

Type wall at command prompt and write the message. You can use any symbol, character or white space in message. You can write the message in multiple lines too. After typing message, use ctrl+d to send it to all users.

How do I send messages through terminal in Ubuntu?

Each enter line will make a message pop up. To exit nc, press Ctrl + C , or Ctrl + D . Then chmod +x message.sh . Then you can just type ./message.sh then type your message, then enter, and your message is sent.