Linux debian 10 how to make a script run a program at startup and auto input value to this program console

Question

Hello guys i'm learning about linux for myself and i wrote a program sample by python as below with filename as "sample_login" at "/home/user/Desktop/sample_login"

ID = Input("ID: ")
print (ID)
pw = Input("PW: ")
print (pw)

Now i want to make a shell script that could change to this program directory and run my program and input id and pw automatically to program console after reboot then how could i do it?i mean perform command as below

cd /home/user/Desktop
./sample_login
#wait ID: 
#input user_id
...

Thank you guys so much

Answer 1

In order to run a script at boot up, you can use systemd service files.

sample.service:

[Unit]
Description=sample service

[Service]
User=johndoe
WorkingDirectory=/path/to/working_dir/
ExecStart=/path/to/working_dir/your_script
Restart=always

[Install]
WantedBy=multi-user.target

You just need to move this file to /etc/systemd/system/. and enable it with systemctl enable sample.service so it starts at bootup. Instead of expecting input, you could accept command line parameters that's a bit easier to handle in automated scripts.