1. What is Linux?
It is a set of free-to-use and freely disseminated UNIX-like operating systems. Its kernel was first released by Linus Benedicte Torvalds in 1991. It was mainly inspired by the ideas of Minix and Unix. A multi-user, multi-task, multi-thread and multi-CPU operating system based on POSIX and Unix. It can run major Unix tools, applications, and network protocols. It supports 32-bit and 64-bit hardware.
2. What are the main functions of the Linux kernel?
System memory management
Software program management
Hardware device management
File system management
3. Interactive mode
Console terminal, graphical terminal
4. Start the shell
The GNU bash shell can provide interactive access to the Linux system. Run as a normal program, usually started when the user logs in to the terminal. The shell that the system starts when logging in depends on the configuration of the user account.
5.bash manual
Most Linux distributions come with online manuals to find information about shell commands and other GNU tools. The man command is used to access the manual page on the linux system. When viewing the manual with the man command, use the paging program to be realistic.
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