there are four main parts that make up a Linux system:
■ The Linux kernel
■ The GNU utilities
■ A graphical desktop environment
■ Application software
2.5) The Unix/Linux architecture
The Linux console:
In the early days of Linux, when you booted up your system you would see a login prompt on your monitor, and that’s all. As mentioned earlier, this is called the Linux console. It was the only place you could enter commands for the system.
With modern Linux systems, when the Linux system starts it automatically creates several virtual consoles. A virtual console is a terminal session that runs in memory on the Linux system.
In the Linux console you do not have the ability to run any graphical programs. You can only use text programs to display on the Linux text consoles.
After logging in to a virtual console, you can keep it active and switch to another virtual console without losing your active session.
The Linux console login screen
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