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The output of your command "$ who" is:

wahid    pts/1        Feb 21 23:15 (192.168.254.125)
wahid    seat0        Feb 20 23:25 (login screen)
wahid    tty2         Feb 20 23:25 (tty2)
wahid    pts/3        Feb 22 17:59 (192.168.254.125)
root     pts/5        Feb 22 17:58 (tmux(74776).%1)
wahid    pts/2        Feb 22 17:59 (192.168.254.125)
root     pts/4        Feb 22 17:55 (tmux(74776).%0)
root     pts/6        Feb 22 17:58 (tmux(74776).%2)