who - show who is logged onto the system


Usage

who [OPTION]... [ FILE | ARG1 ARG2 ]

linux1[1]% who
sshimko1 pts/0    Sep 28 21:14 (pcp02890045pcs.catonv01.md.comcast.net)
zelalem1 pts/1    Sep 30 08:50 (141.157.34.10)
kirkley1 pts/2    Sep 30 12:21 (pooled-155-220.oit.umbc.edu)
pogle1   pts/3    Sep 30 08:39 (140.229.189.9)
dblock   pts/4    Sep 27 07:53 (pcp09316283pcs.towson01.md.comcast.net)
staples1 pts/5    Sep 30 15:30 (ecs021pc42.ucslab.umbc.edu)
st2      pts/6    Sep 30 16:10 (ite240pc04.cs.umbc.edu)
qzhu1    pts/7    Sep 26 17:53 (predict.eng.umd.edu)
mcmillan pts/9    Sep 30 07:30 (willrogers.umbc.edu)
aram1    pts/10   Sep 30 16:15 (ecs104asgi18.gl.umbc.edu)
kpantha1 pts/12   Sep 30 15:21 (lib037pc30.ucslab.umbc.edu)
kg2      pts/13   Sep 30 16:15 (ecs104asgi20.gl.umbc.edu)
damian   pts/14   Sep 29 16:32 (kooshofdeath.ucs.umbc.edu)
vutran1  pts/15   Sep 30 16:15 (ite240pc05.cs.umbc.edu)
grw1     pts/16   Sep 30 16:15 (mdrsgate02-vlan54.usi.net)
tbole1   pts/17   Sep 30 09:20 (moonshine.umbc.edu)
aktta1   pts/20   Sep 30 15:51 (ecs104asgi16.gl.umbc.edu)
ru       pts/19   Sep 30 15:36 (130.85.84.134)
wlo1     pts/21   Sep 30 15:49 (wireless-169-69.umbc.edu)
spatel22 pts/22   Sep 30 13:00 (207.46.238.137)
msokal1  pts/23   Sep 30 15:58 (ecs021pc34.ucslab.umbc.edu)
joshi    pts/24   Sep 30 14:26 (shambhu.cs.umbc.edu)
jonb1    pts/25   Sep 30 14:00 (resnet-207-138.resnet.umbc.edu)
ewu      pts/26   Sep 29 13:37 (sparklin-1.umbc.edu)
ian5     pts/27   Sep 30 13:45 (resnet-208-202.resnet.umbc.edu)
loratto1 pts/29   Sep 30 13:05 (resnet-251-46.resnet.umbc.edu)
twalsh5  pts/30   Sep 30 14:22 (lawn-net168-in.rutgers.edu)
wzhu     pts/31   Sep 29 10:39 (mecheng-9.meng.umbc.edu)
loratto1 pts/32   Sep 30 13:05 (linux1.gl.umbc.edu)
nlenzi1  pts/33   Sep 30 16:10 (resnet-237-238.resnet.umbc.edu)
syoung7  pts/34   Sep 30 15:50 (pool-70-17-203-76.balt.east.verizon.net)
kalink1  pts/36   Sep 30 16:11 (pcp229972pcs.catonv01.md.comcast.net)
hfliu    pts/37   Sep 30 15:36 (biocreative.ifsm.umbc.edu)
syoung7  pts/39   Sep 30 15:49 (pool-70-17-203-76.balt.east.verizon.net)
charles9 pts/40   Sep 30 15:36 (resnet-238-194.resnet.umbc.edu)
rays1    pts/41   Sep 30 14:04 (resnet-237-90.resnet.umbc.edu)
geipa1   pts/42   Sep 30 15:39 (pool-70-16-11-217.balt.east.verizon.net)
pr3      pts/43   Sep 30 16:13 (ecs122pc21.ucslab.umbc.edu)
slwin1   pts/28   Sep 30 14:20
ghoers1  pts/44   Sep 30 16:16 (wireless-168-167.umbc.edu)
dblock   pts/45   Sep 28 14:57 (ite208-pc-01.cs.umbc.edu)
zelalem1 pts/46   Sep 30 15:41 (wireless-168-14.umbc.edu)
manesh1  pts/47   Sep 30 16:16 (wireless-169-234.umbc.edu)
holder1  pts/48   Sep 30 14:58 (holderh1-wd1.jhuapl.edu)
kordula1 pts/49   Sep 30 14:12 (resnet-206-110.resnet.umbc.edu)
ps1      pts/50   Sep 30 15:43 (mediapc-18.umbc.edu)
apasse1  pts/51   Sep 30 15:46 (pcp04599050pcs.elictc01.md.comcast.net)
wlo1     pts/52   Sep 30 14:24 (wireless-169-69.umbc.edu)
f10      pts/53   Sep 30 15:11 (resnet-223-210.resnet.umbc.edu)
adurkin1 pts/54   Sep 30 14:12 (wireless-169-240.umbc.edu)
cfritz2  pts/55   Sep 30 12:18 (pcp228031pcs.catonv01.md.comcast.net)
shan5    pts/56   Sep 30 15:48 (ecs104asgi11.gl.umbc.edu)
jonb1    pts/35   Sep 30 14:00
st2      pts/57   Sep 30 15:50 (ite240pc04.cs.umbc.edu)
apasse1  pts/58   Sep 30 15:48 (pcp04599050pcs.elictc01.md.comcast.net)
dhood2   pts/59   Sep 30 16:13 (wireless-169-114.umbc.edu)
c13      pts/60   Sep 30 13:15 (daneel.umbc.edu)
jgeddes1 pts/61   Sep 30 14:37 (wireless-169-183.umbc.edu)
m42      pts/62   Sep 30 15:50 (ecs104asgi19.gl.umbc.edu)
macland1 pts/63   Sep 30 15:51 (ecs333pc22-lx.ucslab.umbc.edu)
benm1    pts/64   Sep 30 12:40 (resnet-238-102.resnet.umbc.edu)
rtag1    pts/65   Sep 30 14:32 (ecs333pc18-lx.ucslab.umbc.edu)
jase1    pts/66   Sep 30 16:17 (65.194.214.14)
msokal1  pts/67   Sep 30 15:59 (ecs021pc34.ucslab.umbc.edu)
jonbron1 pts/68   Sep 30 15:56 (wireless-168-169.umbc.edu)
wlo1     pts/69   Sep 30 15:54 (wireless-169-69.umbc.edu)
trev1    pts/70   Sep 30 12:25 (resnet-233-122.resnet.umbc.edu)
ggordo2  pts/72   Sep 30 15:57 (ite207-pc-01.cs.umbc.edu)
jbligh1  pts/74   Sep 30 15:58 (resnet-231-58.resnet.umbc.edu)
huyluu1  pts/76   Sep 30 15:59 (wireless-168-20.umbc.edu)
wstone1  pts/77   Sep 30 12:30 (xyz101.pepco.com)
mvesely1 pts/78   Sep 30 16:01 (ecs021pc37.ucslab.umbc.edu)
pr3      pts/79   Sep 30 16:00 (ecs122pc21.ucslab.umbc.edu)
jonbron1 pts/81   Sep 30 16:01 (wireless-168-169.umbc.edu)
linux1[2]%

To find out who you are logged in as issue the command who am i. This becomes useful if you end up having multiple accounts on multiple machines with different login ids.

linux1[2]% who am i
linux1.gl.umbc.edu!dhood2   pts/59   Sep 30 16:13 (wireless-169-114.umbc.edu)
linux1[3]%

Daniel J. Hood
Last modified: Thu Sep 30 16:19:40 EDT 2004