vi /tmp/echo.sh
#!/bin/sh
while :
do
echo "123" >>/tmp/echo.txt
done
chmod +x /tmp/echo.sh
sh /tmp/echo.sh
nohup sh /tmp/echo.sh &
[oracle@db8 tmp]$ ps -ef|grep echo.sh
oracle 4452 3962 99 11:40 pts/1 00:00:12 sh /tmp/echo.sh
oracle 4466 3962 0 11:41 pts/1 00:00:00 grep echo.sh
kill -9 4452
[oracle@db8 tmp]$ ps -ef|grep echo.sh
oracle 4475 3962 0 11:41 pts/1 00:00:00 grep echo.sh
[1]+ Killed nohup sh /tmp/echo.sh