Send a Message to Logged Users in Linux Terminal

How does message queue work in Linux?

A message queue is a form of inter-process communication where processes can send and receive messages asynchronously through a kernel-managed queue, facilitating data exchange between them. Processes can push messages onto the queue for other processes to retrieve later, enabling communication without the need for direct connections or shared memory.

What is the message of the day in Linux?

The Message of the Day (MOTD) in Linux typically provides system information or announcements upon login. You can check it by running cat /etc/motd in the terminal.

What is the difference between message passing and message queue?

Message passing involves direct communication between processes, while message queues are intermediaries where processes can deposit and retrieve messages asynchronously.

How to send a message through SSH?

To send a message through SSH, use the ssh command followed by the username and IP address of the target machine, then append the message using the echo command within quotes.

How do I view messages in Linux?

You can view messages in Linux using the dmesg command to display kernel messages and journalctl to access system logs.

Linux is a solution to the data center. It is flexible, stable, secure, and reliable. There are many users logged into servers for development purposes, testing, and usage. There are various tools to send messages to other users, but they do not allow widespread sending or sending to specific users due to security issues, so we’re limited to sending messages via terminals.