When that moment comes, type the above command again and check the output..
right now I couldn't access GUI again, and here is the new return:
ASUSWRT-Merlin RT-AC68U_3.0.0.4 Fri Jul 17 03:17:04 UTC 2015
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
827 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root#
I ran the command serveral times, and the number before admin( second line) keeps changing.
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
827 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root#
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
830 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
832 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
834 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
836 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
838 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
840 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
842 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
844 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
846 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root# ps | grep http
481 admin 6368 S httpd
848 admin 1376 S grep http
admin@RT-AC68R-36E0:/tmp/home/root#