ADB command to turn on some features of the phone, how do I do?

============ Problem Description ============

I want to use the ADB command to start some features of the phone, such as turning on "unknown source", which allows third-party programs to be installed. Because I'm going to write a script that automatically installs the APK, but the system default setting is not allowed for third parties. Because each operation before the brush version, the phone more open with the hand is too much trouble. Want to find out how to use the ADB command to open "unknown source" and then write a script.

============ Solution 1============

Run the script in the Brush pack automatically, or the computer installs the app with adb install

ADB command to turn on some features of the phone, how do I do?