Glossary

everything about DevOps

A

Absolute file path: The full file path, which starts from the root

Argument (Linux): Specific information needed by a command

Authentication: The process of verifying who someone is

Authorization: The concept of granting access to specific resources in a system

B

Bash: The default shell in most Linux distributions

C

Command: An instruction telling the computer to do something

F

File path: The location of a file or directory

Filesystem Hierarchy Standard (FHS): The component of the Linux OS that organizes data

Filtering: Selecting data that match a certain condition

Foreign key: A column in a table that is a primary key in another table

N

nano: A command-line file editor that is available by default in many Linux distributions

O

Options: Input that modifies the behavior of a command

P

Permissions: The type of access granted for a file or directory

Principle of least privilege: The concept of granting only the minimal access and authorization required to complete a task or function

Penetration test (pen test): A simulated attack that helps identify vulnerabilities in systems, networks, websites, applications, and processes

R

Relative file path: A file path that starts from the user's current directory

Root directory: The highest-level directory in Linux

Root user (or superuser): A user with elevated privileges to modify the system

S

Standard input: Information received by the OS via the command line

Standard output: Information returned by the OS through the shell

U

Ubuntu: An open-source, user-friendly distribution that is widely used in security and other industries

Unified Extensible Firmware Interface (UEFI): A microchip that contains loading instructions for the computer and replaces BIOS on more modern systems

User interface: A program that allows the user to control the functions of the operating system

W

Wildcard: A special character that can be substituted with any other character