02-07-2012
Showing all users in 'users' and 'top' commands
Hi All,
I work in a multi user environment where my school uses Red Hat Linux server. When I issue commands such as "top" or "users", I get to see what others are doing and what kinds of applications they are running (even ps -aux will give such information). "users" will let me know who else is currently logged in. I use Linux at my school not as a superuser.
My question is "Is it not a flaw in the design of the Operating System that I cannot have my privacy in the multi user environment?" The fact is "Why should others see what I am doing on a particular machine?" Only Administrator should have that right.
I am sure there are plenty of talented minds who design the OS but why is this not incorporated in OS? At least there should be an option to disable or enable this. Or is there any specific reason why OS designers have not incorporated this feature in the kernel or even in commands such as top, ps or users?
Last edited by shoaibjameel123; 02-07-2012 at 02:26 AM..
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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)