Procure no comando windows
na documentação e você verá:
The current window is marked with a '*'; the previous window is
marked with a '-'; all the windows that are logged in are marked
with a '$' (*note Login::); a background window that has received
a bell is marked with a '!'; a background window that is being
monitored and has had activity occur is marked with an '@' (*note
Monitor::); a window which has output logging turned on is marked
with '(L)'; windows occupied by other users are marked with '&' or
'&&' if the window is shared by other users; windows in the zombie
state are marked with 'Z'.
O $
denota que um shell de login foi iniciado. A sessão do terminal está registrada com who
e w
e o ~/.bash_profile
teria sido executado na inicialização do shell.