Linux Beginner

What is Shell?

A command-line interface that interprets user commands and passes them to the operating system for execution.

A shell provides a text-based interface for interacting with the operating system. Popular shells include Bash (Bourne Again Shell), Zsh, and Fish. The shell reads commands, interprets them, and communicates with the kernel to execute them.

Shells also support scripting, allowing users to automate repetitive tasks by writing sequences of commands in shell scripts.

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Process

A running instance of a program, with its own memory space, process ID, and system resources.

Curl

A versatile command-line tool for transferring data using various network protocols, commonly used for API testing.

Top/Htop

Interactive process viewers that display real-time system resource usage including CPU, memory, and running processes.

Environment Path

The PATH variable that tells the shell which directories to search when looking for executable commands.

Netstat

A command-line tool that displays network connections, routing tables, and interface statistics on a system.

Daemon

A background process that runs continuously on a system, typically providing services like web serving or logging.

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What is Shell?

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