How does linux return the status of the input command?

It mainly depends on what you are doing at this time.

1. If it is a time-consuming command, you can first Ctrl-Z, and then bg will let it run in the background. At this point you can return to the command state.

2. If you use gedit on the command line and close the program window (usually save the file first), you will automatically retreat to the command line interface.

If you use vim on the command line, first press ESC to exit edit mode, and then enter: wq save and exit or q exit or q! Force exit to return to the command line interface.

3. If it is in other states, try Ctrl+Alt+F 1~F6.

About Linux:

Linux is a Unix-like operating system, which can be used and distributed for free. It is 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. Linux inherits the network-centric design idea of Unix and is a multi-user network operating system with stable performance.

Linux operating system was born in 199 1 year1year 10/0/0/5 (this is the first official announcement time). There are many different versions of Linux, but they all use the Linux kernel. Linux can be installed on various computer hardware devices, such as mobile phones, tablets, routers, video game consoles, desktop computers, mainframes and supercomputers.

Strictly speaking, the word Linux itself only means Linux kernel, but in fact, people have become accustomed to using Linux to describe the entire operating system based on Linux kernel, and using GNU engineering tools and databases.