How to organize a Cron on Android?

There is a script test.sh:
#!/system/bin/sh
ls


It needs to be run every 10 seconds on Android. Rummaged a heap of forums but have not found how to organize it.
Tell me how this can be arranged.
August 23rd 19 at 10:45
1 answer
August 23rd 19 at 10:47
How to use crontab in Android?
root + busybox + crond
All of the above done, I can not understand how to cast the tasks of the crond, the script. Can show? - alexis.Schneid commented on August 23rd 19 at 10:50
Here it is:
Creating cronjob

Create the cronjob file in directory /data/crontab/ with the filename root. Write your cronjob inside the file 'root'. Set executable permissions for the file 'root' - Heloise.Walt commented on August 23rd 19 at 10:53

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