| mesg | |
| Author: | Dennis Ritchie, Ken Thompson |
| Developer: | AT&T Bell Laboratories |
| Operating System: | Unix and Unix-like |
| Genre: | Command |
'''mesg''' is a Unix command that sets or reports the permission other users have to write to the current user's terminal using the [[Talk (software)|talk]] and [[Write (Unix)|write]] commands.
It is invoked as:
The 'y' and 'n' options respectively allow and disallow write access to the current user's terminal. When invoked with no option, the current permission is printed.
Input redirection may be used to control the permission of another TTY. For example: