[J65nko]

how do i go to single user mode without reboot?

From init(8):

     The init utility will terminate multi-user operations and resume single-
     user mode if sent a terminate (TERM) signal, for example, ``kill -TERM
     1''.  If there are processes outstanding that are deadlocked (because of
     hardware or software failure), init will not wait for them all to die
     (which might take forever), but will time out after 30 seconds and print
     a warning message.

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