01-17-2002
wall and rwall commands
let's say in my office i have 20 networked sun boxes named host1 through host20. i am currently logged in as root at some random machine, which we will say host13 for this scenario's sake. now, is there any way i can send a text message of some sort over the whole network to all logged in computers at once. i've been at this for days trying to figure out how to do it. im probably just having a brain fart, but could somebody please tell me in detail the command to do this
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rwho(1) General Commands Manual rwho(1)
NAME
rwho - show who is logged in on local machines
SYNOPSIS
DESCRIPTION
produces output similar to the output of the HP-UX command for all machines on the local network that are running the daemon (see who(1)
and rwhod(1M)). If has not received a report from a machine for 11 minutes, assumes the machine is down and does not report users last
known to be logged into that machine.
output line has fields for the name of the user, the name of the machine, the user's terminal line, the time the user logged in, and the
amount of time the user has been idle. Idle time is shown as:
If a user has not typed to the system for a minute or more, reports this as idle time. If a user has not typed to the system for an hour
or more, the user is omitted from output unless the flag is given.
An example output line from would look similar to:
This output line could be interpreted as is logged into and his terminal line is has been logged on since September 12 at 13:28 (1:28
p.m.). has not typed anything into for 11 minutes.
WARNINGS
output becomes unwieldy when the number of users for each machine on the local network running becomes large. One line of output occurs
for each user on each machine on the local network that is running
AUTHOR
was developed by the University of California, Berkeley.
FILES
Information about other machines.
SEE ALSO
ruptime(1), rusers(1), rwhod(1M).
rwho(1)