DRAM training code (DDR): https://blog.asset-intertech.com/test_data_out/2014/11/memory-training-testing-and-margining.html https://github.com/librecore-org/librecore/wiki/Understanding-DDR-Memory-Training
Eric Biederman: https://www.linuxjournal.com/article/4888 https://en.wikipedia.org/wiki/Linux_namespaces
Open Source Firmware Conference: https://osfc.io
Buildroot: https://buildroot.org/
Source code for cat: https://twobithistory.org/2018/11/12/cat.html https://github.com/coreutils/coreutils/blob/master/src/cat.c