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  • Alexander Jaworowski thinks this is interesting:

It can be stopped using the following:

From

Cover of Exploring Raspberry Pi

Note

It is not enough to run disable to disable the service, see SO, http://stackoverflow.com/questions/21596384/cannot-disable-systemd-serial-getty-service.

For 4.4.34+ you must also edit /boot/cmdline.txt.

These issue can be fixed with the following script: https://gist.github.com/alexjaw/7eab796f2120260a31e95509e07a0c8b