CODE EXAMPLE FOR SHELL

kill nohup process

ps -ef
#you will see the proces now, then 
kill -9 PID

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if there are so many backgroud process, kill them using follwing script
#!/bin/bash
while :
do
    echo "Press [CTRL+C] to stop.."
    for pid in $(ps -ef | awk '/your process name/ {print $2}'); do kill -9 $pid; done  
    # credit to above answer 
    sleep 1
done