Auto mount USB stick on plug-in without UUID

Here we have accessed rasberry pi from another linux machine using ssh protocol. You can directly
login in Rasberry pi.
All the files we created, you can download from file link below the article.

rnjn@kali:~$ sudo ssh pi@192.168.1.9
[sudo] password for rnjn: 
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:dVrz8ABI8IVsBdkvYXAYVnpA8Ky45xp7jaPXi/cfUyE.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /root/.ssh/known_hosts:7
  remove with:
  ssh-keygen -f "/root/.ssh/known_hosts" -R "192.168.1.9"
ECDSA host key for 192.168.1.9 has changed and you have requested strict checking.
Host key verification failed.
rnjn@kali:~$ sudo ssh-keygen -f "/root/.ssh/known_hosts" -R "192.168.1.9"
# Host 192.168.1.9 found: line 7
/root/.ssh/known_hosts updated.
Original contents retained as /root/.ssh/known_hosts.old
rnjn@kali:~$ sudo ssh pi@192.168.1.9
The authenticity of host '192.168.1.9 (192.168.1.9)' can't be established.
ECDSA key fingerprint is SHA256:dVrz8ABI8IVsBdkvYXAYVnpA8Ky45xp7jaPXi/cfUyE.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.1.9' (ECDSA) to the list of known hosts.
pi@192.168.1.9's password: 
Linux raspberrypi 5.4.51-v7l+ #1333 SMP Mon Aug 10 16:51:40 BST 2020 armv7l

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Tue Mar 30 10:17:11 2021
pi@raspberrypi:~ $ 

Create a file cpmount  in /usr/local/bin

pi@raspberrypi:~ $ sudo nano /usr/local/bin/cpmount

save this file using Ctrl+o and exit using Ctrl+x.

And change the permission of this file to execute:

pi@raspberrypi:~ $ sudo chmod u+x /usr/local/bin/cpmount

and now you see the file created:

pi@raspberrypi:~ $ cd /usr/local/bin
pi@raspberrypi:/usr/local/bin $ ls
cpmount
pi@raspberrypi:/usr/local/bin $ 

Now create a file  usbstick-handler@.service  in /lib/systemd/system/ using the following command:

pi@raspberrypi:~ $ sudo nano /lib/systemd/system/usbstick-handler@.service

And save this file using Ctrl+o and exit using Ctrl+x.

Now create a file usbstick.rules in /etc/udev/rules.d/ directory using the following command:

pi@raspberrypi:~ $ sudo nano /etc/udev/rules.d/usbstick.rules 

Now save using Ctrl+o and exit using Ctrl+x.

Now Reboot the Rasberry Pi System and Usb device will be found under /media directory.