Who Else Is On The System?

who

The who command shows you what users are currently logged into the computer system.

$ who
aja1    console   Mar 25 07:57
djk1    pts001    Mar 25 10:52
stu1    pts002    Mar 25 10:52
stu2    pts003    Mar 25 10:53

$ who am i
stu1    pts002    Mar 25 10:52

$ _