Jamf Pro Computer Extension Attribute to perform cursory check for macOS auto login user enabled

auto-login-user.sh

#!/bin/bash
# 
# Created by jps3@lehigh.edu on ? (History empty)
# Updated by jps3@lehigh.edu on 2022-05-17
# 
# Jamf Pro Computer Extension Attribute to perform cursory check for macOS auto login user enabled
# https://gist.github.com/jps3/7777f263e0962db6423718b688db03d5
#
# Jamf Pro > Settings > Computer Management > Extension Attributes
# Display Name      : auto-login-user
# Description       : Cursory check for existence of 'kcpassword' file and 'autoLoginUser' plist key and reports result.
# Data Type         : String
# Inventory Display : General
# Input Type        : Script
# 

# Check for non-zero-sized kcpassword file
if [[ -s "/etc/kcpassword" ]]; then
    # Read value of autoLoginUser key (may be empty string, or non-existent key and exit non-zero)
    AUTO_LOGIN_USERNAME="$(defaults read /Library/Preferences/com.apple.loginwindow.plist autoLoginUser)"
    # If non-zero-length value returned ...
    if [[ -n "$AUTO_LOGIN_USERNAME" ]]; then
        # Report the username
        echo "<result>${AUTO_LOGIN_USERNAME}</result>"
    else
        # Report empty value
        echo "<result></result>"
    fi
fi