User prompts abort when the user enters the EOF character.
vyos@vyos:~$ poweroff
Are you sure you want to poweroff this system? [y/N] ^DTraceback (most recent call last):
File "/usr/libexec/vyos/op_mode/powerctrl.py", line 174, in <module>
main()
File "/usr/libexec/vyos/op_mode/powerctrl.py", line 164, in main
execute_shutdown(args.poweroff, reboot=False,ask=args.yes)
File "/usr/libexec/vyos/op_mode/powerctrl.py", line 84, in execute_shutdown
if not ask_yes_no("Are you sure you want to %s this system?" % action):
File "/usr/lib/python3/dist-packages/vyos/util.py", line 185, in ask_yes_no
c = input().lower().strip()
EOFError
vyos@vyos:~$