17-Introduction to Unix

These flashcards cover key concepts related to Unix, including operating system definitions, command line interface features, and common commands.

Operating System

The program that controls all the other parts of the computer system, managing hardware and software.

Kernel

The core part of the operating system that manages memory, schedules CPU work, and organizes data transfer.

User Interface

Methods used by users to interact with the computer, including GUIs and Command Line Interfaces.

Command Line Interface (CLI)

A user interface that requires text input to execute commands, often more powerful than a GUI.

Shell

A program interpreter in Unix that executes user commands entered in a command line interface.

Putty

An SSH and telnet client developed for Windows, allowing secure remote access.

ssh

Secure Shell, a protocol to connect to remote computers securely.

SFTP

Secure File Transfer Protocol allowing file transfers between computers over a network.

Command

A sequence of words entered in a shell that tells the operating system to perform specific tasks.

passwd command

A command used in Unix to change the user's password.

man command

A command to access the Unix manual pages for help on commands.

Examples of Unix commands

Common commands include 'who' for current users and 'date' for the current date and time.

File Permissions

Access restrictions that determine who can read, write, or execute a file or directory.