w - Show who is logged on and what they are doing

Example of output

 21:12:07 up 12:07,  5 users,  load average: 0.59, 0.35, 0.49
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
andrew   seat0    login-           09:04    0.00s  0.00s  0.01s /usr/libexec/gdm-wayland-session env GNOME_SHELL_SESSION_MODE=u
andrew   tty2     tty2             09:04   12:07m  0.06s  0.05s /usr/libexec/gnome-session-binary --session=ubuntu
andrew   pts/1    tmux(10995).%0   09:44   23.00s  5.12s  5.12s -zsh
andrew   pts/2    tmux(10995).%2   09:48   39.00s  8.96s  0.23s vi -S /home/andrew/Code/note/.create-nvimrc +start /home/andrew
andrew   tty3     -                16:36    4:31m  1.20s  1.14s -zsh