Hi everybody, I've been studying linux for some time now. I still see my self as an begginer, but that's not a bad thing. I struggling to decide what subsystem to focus right know. I have three options and would like to know what people think about, since listening (or reading) other people aways help me to decide. My options are: i. Memory ii. Network iii. Filesystems / Disk cache Today I'm working on embedded market and have a crush on ARM architecture. I have absolute no knowledge on (i), some fundations (in userspace) on (ii) and nothing but mkfs experience on (iii). LoL. The second question is: What are the (market) applications of these expertise? I know that (ii) will be huge part ot IoT and IIoT. And the (iii) can be used on database tunning for example. (i) seem just f******* cool to me. When I say (market) please, do not get me wrong. The jobs on kernel are not popping out (especially on Brazil) like the Java & Big Data ones, I still have to eat, but I'm not willing to move from my passions(kernel-dev) for money. Thanks in advance and regards to everybody! -- "Do or do not. There is no try" Yoda Master