! Список функций

check_connection()
usage()
parse_options()
main()
success()
info()
warn()
error()
die()
step()
apt_get_wrapper()
apt_update()
check_assertions()
upgrade_system()
install_script_dependencies()
create_custom_config()
confirm_installation()
manage_sshd_config()
setup_package_source()
register_debconf()
workarounds_because_sysadmin_sucks()
install_yunohost_packages()
restart_services()
fix_locales()
conclusion()
is_raspbian()
user_pi_logged_out()
del_user_pi()
clean_image()

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main()

1. parse_options()
2. check_assertions()
3.