mesg

1. The mesg command is a command-line tool used in Unix-based systems.
2. It is short for "message" and is used to control the reception of messages through the terminal.
3. The command allows users to enable or disable the reception of messages sent by other users.
4. By default, the mesg command sets the reception of messages to be enabled.
5. When mesg is used with the + sign, it enables message reception, allowing other users to send messages to your terminal.
6. Conversely, using the - sign with mesg disables message reception, preventing other users from sending messages to your terminal.
7. Mesg is particularly useful in multi-user environments where users share access to the same system.
8. It helps maintain privacy and prevents unsolicited messages from disrupting a user's work on the terminal.
9. The mesg command is often used in conjunction with other commands to create interactive communication channels between users on the same system.
10. It is a simple yet effective command-line tool for managing message reception within a Unix environment.