wall - Unix, Linux Command
wall -- send a message to everybodys terminal.
] [ message
sends a message to everybody logged in with their
. The message can be given as an argument to
, or it can be sent to
s standard input. When using the standard input from a terminal,
the message should be terminated with the
key (usually Control-D).
The length of the message is limited to 22 lines.
For every invocation of
wall a notification will be written to syslog, with facility
LOG_USER and level
Suppresses the normal banner printed by
wall, changing it to "Remote broadcast message".
This option is only available for root if
wall is installed set-group-id, and is used by
variable - the time printed in the banner is based on the systems
Miquel van Smoorenburg, firstname.lastname@example.org