[charlieflowers]

Yeah, I went through it years ago. It was very helpful. Makes you realize just how much of the non-kernel aspect of the Linux world depends on open source. Most of LFS is about downloading the source code of non-kernel programs, and then learning to build them.

It's not necessarily optimized to make you productive as a user or system admin. But it's a systematic journey through building the OS and tools, and therefore it makes you aware of what's available and gives you a glimpse of what's under the hood.