From routers to smart speakers and industrial controllers, the flexibility of Linux and the prevalence of low-cost processors have made it a paradise for developers. Even more astonishing is that in China, you can currently buy a development board capable of running Linux for less than 100 yuan, which is practically a steal. The goal … Read more
Under the black curtain of the terminal, Shell commands and Linux commands are like twin flames, intertwined yet distinctly characterized. Beginners often confuse the two, but in reality, they are mirror projections of ‘environment’ and ‘system’. 1. Definition Distinction: Interpreter vs Kernel Shell commands: Instructions executed through a Shell interpreter (such as Bash/Zsh), essentially serving … Read more
GPIO (General Purpose Input/Output) is a pin on a microcontroller or microprocessor that can be programmed as an input or output for communication with external devices. In Linux systems, developers can easily read and set the state of GPIO through user space interfaces provided by the kernel, enabling control and monitoring of external devices. This … Read more