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Shell (computing) - Wikipedia The term shell refers to how it is a relatively thin layer around an operating system [1][2] A shell is generally a command-line interface (CLI) program although some graphical user interface (GUI) programs are arguably classified as shells too
What is a shell? (Bash Reference Manual) A shell allows execution of GNU commands, both synchronously and asynchronously The shell waits for synchronous commands to complete before accepting more input; asynchronous commands continue to execute in parallel with the shell while it reads and executes additional commands
Introduction to Linux Shell and Shell Scripting - GeeksforGeeks What is Shell? A shell is a special user program that provides an interface for the user to use operating system services Shell accepts human-readable commands from users and converts them into something which the kernel can understand
What is Shell? - DataCamp What is a Shell? A shell is a type of computer program called a command-line interpreter that lets Linux and Unix users control their operating systems with command-line interfaces Shells allow users to communicate efficiently and directly with their operating systems
Command Line Shell Basics | shell-basics What is a Shell? A shell is a user interface that allows a person to interact with a computer operating system such as Windows, MacOS, or Linux Some shells have a Graphical User Interface (GUI), but many have a simple Command Line Interface (CLI) into which the user may type commands that the operating system will then execute
Learning the shell - Lesson 1: What is the shell? - LinuxCommand. org Simply put, the shell is a program that takes commands from the keyboard and gives them to the operating system to perform In the old days, it was the only user interface available on a Unix-like system such as Linux
13-D. 10: Shell Control Statements - Engineering LibreTexts Conditional Statements: There are a total of five conditional statements which can be used in bash programming if then else if then fi fi (Nested if) Their description with syntax is as follows: This block will process if specified condition is true statement An example of the code: #If they are equal then print this
Shell Syntax (Bash Reference Manual) Otherwise, roughly speaking, the shell reads its input and divides the input into words and operators, employing the quoting rules to select which meanings to assign various words and characters