How to pass string from script to terminal?

Question

linux

I use Python's subprocess library to call system commands from a script. When calling the sudo apt upgrade command on Linux, you must press the "y" button to confirm consent. How can I directly pass the button press "y" from the script?

def package_upgrade():
    print("[+] Upgrading packages...")
    subprocess.call(["sudo", "apt", "upgrade"])

Answer 1

I recommend reading the documentation. In particular, apt upgrade has flags that allow you not to ask for confirmation.

subprocess.call(["sudo", "apt", "upgrade", "--yes"])

Answer 2

I will add to the collection, to other quite correct options, one more, suitable not only for apt: yes | some_command_with_confirmations.

Answer 3

Write to the stdin of the created process the character 'y' and, if necessary, '\n'. See the subprocess doc for how to get a link to the stdin of a process.

Answer 4

Add option -y or yes or
--noconfirm (default answer most often means don't change configs)