This app provides simplest functionality for starting scripts on Android startup. Since the init.d support was dropped in CM 12.1, there doesn't seem to be a straight-forward way of doing this nowadays.
There is similar software out there, but the source code was either pretty bad or it was closed-sourced at all (which is a no-go for me, especially when running Apps as root).
After installing the App, you'll have to run it at least once for the BootReceiver to work and for the root access to be granted.
It will also show you where to place your scripts, which is usually /data/user/0/x1125io.initdlight/files.
Every script in there will be launched via su -c [file].
You can fetch the current stable release directly as APK from https://github.com/x1125/initd-light/blob/master/app/app-release.apk.
You can use the "TEST SCRIPTS"-Button within the App to run all the scripts like on a startup. The exit-codes, stdout and stderr will be printed.
You can also log the status of the processed scripts via the "initdlight" logtcat tag.
$ adb logcat -s initdlight
--------- beginning of system
--------- beginning of main
09-17 03:19:39.961 9161 9161 D initdlight: started sshd
It will also log exit-code, stdout and stderr when the exit-code is not 0.
Launcher icon powered by Nick Roach (https://www.elegantthemes.com/)