21.2 Program – Edit Image File
You can use (GNU Image Manipulation Program) to edit bitmap images such as photos in Raspberry Pi. It can interface with commercial image editing tool and provide powerful editing function for bitmap image
Raspberry Pi_Eng_21.1.2 Libre Office Program
21.1.2 Program
21.1.2.1 Summary of
program is a GNU-based free-of-charge office program that provides the most functionality needed to create business documents as follows:
■ Calc — Spreadsheet
■ Draw — Vector-based illustration application
Raspberry Pi_Eng_21.1.1 Available Office Programs
21.1 Open Office – Office Software
21.1.1 Available Office Programs
To create documents in a real business environment, you need features such as word processors, spreadsheets, and presentation tools. Raspberry Pi also allows you to do this with a variety of programs.
Raspberry Pi_Eng_21.0 Chapter 21 Office and Utility Program
Chapter 21 Office and Utility Program
Chapter’s Main Topics
This chapter will introduce various business programs that can be used basically in Raspbian and various utility programs that are necessary for using the computer. Some of these programs are already installed, and others need to be installed.
It includes descriptions on the following topics:
■ OpenOffice
■ Gimp
■ Scrot
■ CUPS
■ Web Browser
Raspberry Pi_Eng_15.2 Structure of File System
15.2 Structure of File System
Here, we will take a look at the basic structure of file system in the Raspberry Pi system. The Raspberry Pi system has a built-in file system that is created by default when the system is installed, and users manage their own data within these file systems.
Raspberry Pi_Eng_15.1.4 Review of Special Device
15.1.4 Review of Special Device
15.1.4.1 Booting SD Card
The default Debian distribution consists of two partitions on the SD card. The first partition is 75 MB in VFAT format, a format for Microsoft’s removable devices. It has the files needed to configure Raspberry Pi and files to load Linux itself, and is mounted as “/boot” after booting. The second partition is much larger in the EXT4 format, the default format for fast access and data reliability in Linux. All other programs, user-installed programs, and user data are all stored here. It occupies most of the SD card.
Raspberry Pi_Eng_15.1.3 Mounting Device
15.1.3 Mounting Device
15.1.3.1 Meaning of Mount
On Linux systems, all files used on the system are supposed to belong to a file hierarchy, one large tree type with root (/) at the top. These files may appear to be in one hierarchy, but may actually be scattered across a variety of devices.
Raspberry Pi_Eng_15.1.2 Formatting Disk
15.1.2 Formatting Disk
15.1.2.1 What Is Formatting Disk?
After a partition is created for a disk, the partition must be initialized to a specific file-system, and this initializing process is format. When you format a partition, a specific file-system is determined for that partition, and a master directory is created that manages all the directorys and files that will be stored on that partition.
Raspberry Pi_Eng_15.1.1 Partition Management
15.1 Management of Logical Storage Device
15.1.1 Partition Management
A disk can be divided into partitions that are spaces managed independently and divided logically. Partitions are also called “disk slices” or “disklabel”. The result of partitioning is managed by partition table in sector 0 of disk.
Raspberry Pi_Eng_15.0 Chapter 15 Storage Device and Filesystem
Chapter 15 Storage Device and Filesystem
Chapter’s Main Topics
This chapter describes the basic concepts of storage devices used to store data and how to manage storage devices by partitions, and explains how the structure of the file system provided by the Raspbian operating system basically is configured.
It includes descriptions on the following topics:
■ Logical storage device
■ Partition management
■ Format disk
■ Mount devic
■ Structure of file system