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The output of your command "$ who" is:

wahid    pts/0        Mar 14 17:33 (192.168.254.125)
wahid    seat0        Mar 14 17:37 (login screen)
wahid    tty2         Mar 14 17:37 (tty2)
wahid    pts/2        Mar 22 11:28 (192.168.254.125)
wahid    pts/3        Mar 15 15:52 (192.168.254.125)
wahid    pts/4        Mar 22 11:28 (192.168.254.125)
wahid    pts/5        Mar 22 15:01 (192.168.254.125)
wahid    pts/6        Mar 22 15:01 (192.168.254.125)
root     pts/7        Mar 25 14:23 (tmux(1646548).%0)
root     pts/8        Mar 28 15:34 (tmux(1646548).%1)