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This directory contains the "distributed rwho" (drwho) program. Drwho
alleviates certain rwho(1) limitations. For instance it adds
functionality that spans subnets. In addition, drwho prints a much
more concise listing of who's logged in around a network.
Below are some examples of how to use drwho.
0. Start by running the server in a window or as a daemon, e.g., run
the following on a local machine, such as tango.cs.wustl.edu:
% drwho-server
Then, If you'd like to find out who's logged in, try the following
commands:
1. Print out the command-line options.
% drwho-client -h
usage: ./drwho-client
-? prints a short usage message
-A append the following hostname to the list of predefined hostnames.
-a return information on *all* users remotely logged in (uses yp passwd).
-b run the server in the background (i.e., as a daemon).
-d turn on debugging.
-F use the following file contents to initialize the host list.
-f use the following file contents to initialize the friends database.
-H use the following hostname as part of the new list of hostnames.
(this option overwrites the existing default names).
-h print a long usage message.
-L print the login name rather than the real name (which is the default).
-l print information in long format (works for all protocols).
-p set the port number (server must correspond).
-r do the remote lookups (i.e., local operations are the default).
-R print info using the rusers format.
-s sort the output by login name.
-S sort the output by real name.
-t set the amount of time we wait for servers to timeout.
-w return information on just one user.
----------------------------------------
2. Find out which friends are logged in (* means currently active)
% drwho-client -A tango.cs.wustl.edu -r -f ~schmidt/.friends.dta
remote friends logged on
------------------------
*Doug O'las [tango*(3) mambo]
Carlos O'Ryan [tango swarm.cs.wustl.edu macarena]
Irfan Pyarali [merengue]
Nanbor Wang [lambada]
Marina Spivak [mambo]
Chris Gill [tango]
*Vishal [merengue*(2)]
Kirthika [tango waltz]
Naga [tango polka]
Alex [lindy]
Bala [cumbia]
Pradeep [flamenco]
Matt Braun [lambada]
------------------------
friends: 5 users: 168
You'll to write a friends.dta file in order for this feature to work.
Here's one that I've got:
schmidt Doug O'las
coryan Carlos O'Ryan
irfan Irfan Pyarali
levine David Levine
nanbor Nanbor Wang
jp4 Jeff Parsons
marina Marina Spivak
cdgill Chris Gill
vishal Vishal
kirthika Kirthika
naga Naga
alex Alex
bala Bala
pradeep Pradeep
brunsch Darrell Brunsch
jxh James Hu
yamuna Yamuna
mjb2 Matt Braun
gokhale Andy Gokhale
fredk Fred Kuhns
If you put this file in ~/.friends.dta drwho will automatically locate
it.
----------------------------------------
3. Find out where a particular person is logged in:
% drwho-client -A tango.cs.wustl.edu -r -w schmidt
tango
This is useful for remote commands that require a hostname, e.g.:
% talk schmidt@`drwho-client -A tango.cs.wustl.edu -r -w schmidt`
or
% rsh `drwho-client -w schmidt` ps
PID TTY TIME CMD
1844 pts/9 0:01 tcsh_6.0
4821 ? 0:02 perfmete
77 pts/20 0:01 tcsh_6.0
4845 pts/2 0:00 tcsh_6.0
4766 ? 0:00 xmessage
4850 pts/3 0:06 tcsh_6.0
5057 pts/4 0:01 tcsh_6.0
4826 ? 18:07 netscape
4802 ? 0:07 mwm
% foreach host (`drwho -r -l -w schmidt`)
? echo $host
? rsh $host w | egrep schmidt
? end
----------------------------------------
4. Find out everyone who is logged in everywhere!
% drwho-client -A tango.cs.wustl.edu -r -a
remote users logged on
------------------------
rlneblet [ascc]
woody [fixer]
Jyoti Parwatikar [hopscotch]
Stephen D. Scott [occam]
klkramer [ascc]
dmorris [ascc]
*pabacard [ascc*]
sestasne [ascc]
Sumedh Mungee [merengue lindy]
Alexander Babu Arulanthu [lindy]
Robert A. Rouse [siesta]
asamarak [ascc]
Tom Chaney [snoodles]
Joe Hoffert [monkeybars]
ircornel [ascc]
Chris Cleeland [macarena]
*Matthew Karl Lundberg [enz lcs*(2)]
dmschult [ascc]
sherlia [owen]
*wmwhites [ascc*]
Marius Mihai Tutunaru [siesta]
Ken Wong [ackbar sarlacc]
abstutts [ascc]
Barry L. Kalman [sachel]
Yunhong Zhou [siesta]
Marina Igorevna Spivak [mambo]
mschraed [ascc]
tuck [ascc]
Daniel Robert Dooly [cardinal]
emlentz [ascc]
Margaret Flucke [honker yoda brainmap]
Jonathan S. Pollack [siesta]
Gurudatta M. Parulkar [ackbar]
Mike Richards [teebo]
*Vishal Kachroo [merengue*(1)]
The dump man [tapeworm]
Uooyeol Yoon [siesta]
jtlink [ascc]
Dan Rosenstein [tubman]
cdnorden [ascc]
Jon Turner [spanky]
Stan C. Kwasny [lambda]
aymessin [ascc]
Nanbor Wang [lambada]
wolf [sarlacc]
jgbers [ascc]
Pradeep Gore [flamenco]
Chris D. Gill [tango]
sduseja [ascc]
amgarcia [ascc]
*Hongyin Quan [ackbar*(2)]
firemen [helen]
*lskafenb [ascc*]
Sally Goldman [occam]
Marcel Waldvogel [tiger]
klforesm [ascc]
Andy Fingerhut [yoda leia]
root@tango [tango emperor siren flora helen boushi tapeworm siesta rainier taumsauk honker polka]
Nagarajan Surendran [tango polka]
ajeckste [ascc]
Linda Suri [kavita]
Sarah Elizabeth Burcham [helen]
Salathiel Sawyer [helen]
A. Maynard Engebretson [wicket]
Theresa Manzara [siesta]
aagrillo [ascc]
ksviehen [ascc]
Will Gillett [gel]
Elaine M Ashton [helen]
James C. Gray [siesta]
Ian Flanigan [siesta]
jacrank [ascc]
Matthew J Braun [lambada]
*pjhanrah [ascc*]
Vadim Adamov [siesta]
*rbherrin [ascc*]
kslee [ascc]
Balachandran Natarajan [cumbia]
*Qianbo Huai [ecommerce*(2)]
Scott Thomas Haug [bacon kato]
Yuhua Chen [beru]
blawrenc [ascc]
dcoats [ascc]
*sdsinger [ascc*]
Katherine Skirving Larson [odysseus mas]
rmcarbon [ascc]
rer [luke honker leia]
Ron Loui [ai siesta]
Sergio Flores [tango siesta]
maint [helen]
mewedeha [ascc]
Scott Simon [ackbar]
weathert [anakin hobbie honker]
Kirthika Parameswaran [waltz tango]
Scott Douglas Powers [greedo buster]
*vehays [ascc*]
Multiagent Systems Research Group [siren]
*Douglas C. Schmidt [tango*(3) mambo]
sunyh [r2d2]
*jbbrooks [ascc*]
mweisema [ascc]
*baruethe [ascc*]
Yan Zhou [thunderball]
*jennyc [ascc*]
Karl Stiefvater [tamarin helen]
John Roman [helen]
slstraus [ascc]
Subhash Suri [kavita]
Sandeep Sikka [siesta]
Dna Mutants [lcs]
Irfan Pyarali [merengue]
ajhingst [ascc]
Tuomas Sandholm [siren]
Carlos O'Ryan [tango swarm.cs.wustl.edu macarena]
Tilman Wolf [siesta]
------------------------
friends: 20 users: 20
----------------------------------------
5. Print out all machines and who is logged into each one
% drwho-client -A tango.cs.wustl.edu -R -l
kavita Subhash Suri, Linda Suri
lcs Matthew Karl Lundberg*(2), Dna Mutants
leia Andy Fingerhut, rer
rainier root@tango
thunderball Yan Zhou
lindy Sumedh Mungee, Alexander Babu Arulanthu
flamenco Pradeep Gore
ai Ron Loui
wicket A. Maynard Engebretson
occam Stephen D. Scott, Sally Goldman
helen firemen, Sarah Elizabeth Burcham, Elaine M Ashton, root@tango, maint, John Roman, Karl Stiefvater, Salathiel Sawyer
enz Matthew Karl Lundberg
tamarin Karl Stiefvater
tiger Marcel Waldvogel
cumbia Balachandran Natarajan
r2d2 sunyh
fixer woody
ecommerce Qianbo Huai*(2)
lambda Stan C. Kwasny
boushi root@tango
mambo Douglas C. Schmidt, Marina Igorevna Spivak
ascc slstraus, rmcarbon, aymessin, aagrillo, sdsinger*, dmschult, sestasne, dmorris, jgbers, jennyc*, sduseja, baruethe*, gzhou*, vehays*, pjhanrah*, dcoats, saduthie*, ksviehen, cdnorden, ajhingst*, mschraed, asamarak, pabacard*, mewedeha, ajeckste, jbbrooks, blawrenc, amgarcia, abstutts, klforesm, klkramer, pkshah*, jtlink, jacrank, wmwhites*, kslee, mweisema, emlentz, rlneblet, tuck
beru Yuhua Chen
emperor root@tango
siren Tuomas Sandholm, root@tango, Multiagent Systems Research Group
tubman Dan Rosenstein
gel Will Gillett
honker Margaret Flucke, root@tango, weathert, rer
greedo Scott Douglas Powers
swarm.cs.wustl.edu Carlos O'Ryan
tapeworm root@tango, The dump man
siesta Uooyeol Yoon, Marius Mihai Tutunaru, Vadim Adamov, Robert A. Rouse, Jonathan S. Pollack, James C. Gray, Sergio Flores, Sandeep Sikka, Ron Loui, Yunhong Zhou, Tilman Wolf, Theresa Manzara, Ian Flanigan, root@tango
luke rer
snoodles Tom Chaney
ackbar Ken Wong, Scott Simon, Gurudatta M. Parulkar, Hongyin Quan*(1)
buster Scott Douglas Powers
tango Nagarajan Surendran, Sergio Flores, Chris D. Gill, Kirthika Parameswaran, Carlos O'Ryan, root@tango, Douglas C. Schmidt*(3)
teebo Mike Richards
cardinal Daniel Robert Dooly
lambada Nanbor Wang, Matthew J Braun
merengue Sumedh Mungee, Vishal Kachroo*(1), Irfan Pyarali
macarena Chris Cleeland, Carlos O'Ryan
sarlacc wolf, Ken Wong
spanky Jon Turner
brainmap Margaret Flucke
polka Nagarajan Surendran, root@tango
waltz Kirthika Parameswaran
flora root@tango
anakin weathert
bacon Scott Thomas Haug
hopscotch Jyoti Parwatikar
mas Katherine Skirving Larson
kato Scott Thomas Haug
hobbie weathert
odysseus Katherine Skirving Larson
sachel Barry L. Kalman
taumsauk root@tango
yoda Margaret Flucke, Andy Fingerhut
owen sherlia
monkeybars Joe Hoffert
|
