Who (Unix)

who
Developer(s)AT&T Bell Laboratories
Initial releaseNovember 3, 1971; 52 years ago (1971-11-03)
Operating systemMultics, Unix, Unix-like, Plan 9
PlatformCross-platform
TypeCommand
Licensecoreutils: GPLv3+

The standard Unix command who displays a list of users who are currently logged into the computer.

The who command is related to the command w, which provides the same information but also displays additional data and statistics.