Linux Learning-Lab building (1)

1.Shell: Command interpreter

2.Linux Skill Tree

The 3.x11:x window system, which itself is just a toolkit and architecture protocol, xorg is an implementation of the X architecture specification, a server that provides a graphical interface for implementing the X Protocol specification

4. The terminal essentially corresponds to the/dev/tty device on Linux, and the multi-user login of Linux is done through different/dec/tty devices.

5. View the owning user group: Groups command

Linux Learning-Lab building (1)