ADB commands in Android Terminal | adb-daemon and ADB shell via TCP
We are executing ADB shell commands in Android Terminal with root access. And we also discussed the idea of ADB demon so that anyone can connect to this TCP socket to access ADB shell (this is not adb shell in practical, it's a root shell, but you can interchange these terms accordingly). To conclude, if you have root shell, execute those commands in your android shell. If you don't have root, ADB shell is your way.
Good luck!