What is the difference between shell commands and linux commands?

The difference between shell command and linux command: 1. Shell is a script language running on the Linux system, a program written in C language, and linux command is a command to manage the Linux system; 2 The shell can execute some commands repeatedly or in batches, or write repeatedly executed commands into a script for execution, while Linux commands require inputting commands one by one.

#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.

What is the difference between shell commands and linux commands

As we all know, shell is a scripting language running on the Linux system, and it is knowledge that every operation and maintenance personnel must master; and we are using Linux When operating a system, it must be operated through commands. So what is the connection between shell scripting language and Linux commands? What is the difference between them? This article will explain it to you.

Shell is translated as shell. It is wrapped in the outer layer of the Linux kernel. It is a human-machine interface that can issue relevant instructions to the operating system through a series of Linux commands. The shell can combine a series of Linux commands through its conditional statements and loop statements to form a process-oriented program, that is, a shell script, thereby realizing some complex functions.

Shell can be said to be the general name of the Linux command set, which belongs to the human-machine interface of the command line. The shell is a program written in C language, which is a bridge for users to use Linux. The shell is both a command language and a programming language; secondly, the shell also refers to an application program. This application program provides an interface through which users access the services of the operating system kernel.

It can be seen that the shell is equivalent to a decorated command line. Like the command line, it can operate Linux; but the shell is process-oriented, which is equivalent to having certain logic and processes. The command line is just a single operation.

The linux command is a command for managing the Linux system. For the Linux system, whether it is the central processor, memory, disk drive, keyboard, mouse, or user, they are all files. The commands for Linux system management are the core of its normal operation, similar to the previous DOS commands. There are two types of Linux commands in the system: built-in Shell commands and Linux commands.

The difference between shell and Linux commands

#1. Execute directly on the command line, that is, execute in the current shell environment, such as Some environment variables must be executed in the current shell environment.

2. When the script is executed, a child process will be forked, and all operations will be performed in the child process. If it involves setting environment variables in the script, the environment variables will disappear when the script ends. If you modify the environment variables, you need to pay special attention.

3. The shell can execute some commands repeatedly or in batches. You can also write the commands you want to execute repeatedly into a script for execution. On the command line, you need to enter commands one by one. Compare trouble.

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