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1.1 ! root 1: .TH WALL 8 ! 2: .CT 1 sa_nonmortals ! 3: .SH NAME ! 4: wall \- write to all users ! 5: .SH SYNOPSIS ! 6: .B /etc/wall ! 7: .SH DESCRIPTION ! 8: .I Wall ! 9: reads its standard input until an end-of-file. ! 10: It then sends this message, ! 11: preceded by ! 12: `Broadcast Message ...', ! 13: to all logged in users. ! 14: .PP ! 15: The sender should be super-user to override ! 16: any protections the users may have invoked. ! 17: .SH FILES ! 18: .F /etc/utmp ! 19: .SH "SEE ALSO" ! 20: .IR write (1) ! 21: .SH DIAGNOSTICS ! 22: `Cannot send to ...' when the open on ! 23: a user's tty file fails.
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