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Good chance that baby monitor uses something like FreeRTOS, not Linux for doing it's stuff. If you are unlucky, it's Android and they did the bare minimum to have a functional product.

E: Also, Android uses the Linux kernel, but similarities with Linux based operating systems pretty much stop there.

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Android is a Linux based operating system so saying it stops there doesn’t make any sense. There is a wild variety of Linux OS out there in embedded encompassing a lot of various patchsets, libc and userland. You just have a bad understanding of what are Linux OS if all you think about is the usual distros.

> Android is a Linux based operating system

Where are the posix utilities ? /s Where is man ? /s

No sarcasm, Bionic libc is a subset of POSIX, Musl strictly follows POSIX 2008 and Glibc is superset of POSIX. 99% of Glibc->Musl porting is dealing with non-POSIX features (a.k.a. GNU extensions)[1]. So in the end we could find that Android apps are more POSIX compliant than software from generic glibc-based distros.

[1] https://wiki.gentoo.org/wiki/Musl_porting_notes

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