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WALL(1) Linux User's Manual WALL(1)
wall -- send a message to everybody's terminal.
wall [ message ]
Wall sends a message to everybody logged in with their mesg(1) permission set to yes. The
message can be given as an argument to wall, or it can be sent to wall's standard input.
When using the standard input from a terminal, the message should be terminated with the
EOF key (usually Control-D).
The length of the message is limited to 20 lines.
There is an undocumented (well not anymore..) option, "-n", that supresses the banner
printed by wall . This is for usage by rwalld (8). Wall will not allow you to use that
flag if wall is installed set-group-id and the user executing wall is not root.
For every invocation of wall a notification will be written to syslog, with facility
LOG_USER and level LOG_INFO.
Wall ignores the TZ variable - the time printed in the banner is based on the systems
Miquel van Smoorenburg, firstname.lastname@example.org
12 September 2000 WALL(1)
All times are GMT -4. The time now is 08:54 PM.