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Manpages WALLSection: User Commands (1)Index Return to Main Contents BSD mandoc Linux 0.99 NAMEwall - write a message to usersSYNOPSISwall [file ]DESCRIPTIONWall displays the contents of file or, by default, its standard input, on the terminals of all currently logged in users.Only the super-user can write on the terminals of users who have chosen to deny messages or are using a program which automatically denies messages. Reading from a file is refused when the invoker is not superuser and the program is suid or sgid. SEE ALSOmesg(1), talk(1), write(1), shutdown(8)HISTORYA wall command appeared in At v7 .
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