Presentation

Fullscreen mode

Just press »F« on your keyboard to show your presentation in fullscreen mode. Press the »ESC« key to exit fullscreen mode.

Overview mode

Press "Esc" or "o" keys to toggle the overview mode on and off. While you're in this mode, you can still navigate between slides, as if you were at 1,000 feet above your presentation.

Unix/Linux

Lesson 7

Author: Egoshkin Danila Igorevich

Plan

BIN - HEX
MagicNumbers
Signature of Files
IrfanView
ColorMania
Hexplorer

BIN - Binary

A binary number is a number expressed in the base-2 numeral system or binary numeral system

BIN - Binary

About one of the first binary number use in Quartz Watch.

Seiko first quartz watch

Full video: https://www.youtube.com/watch?v=_2By2ane2I4
Only Flip flops: https://youtu.be/_2By2ane2I4?t=643

HEX - Hexadecimal

In mathematics and computing, the hexadecimal (also base 16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of 16.
base64

HEX - Hexadecimal

Base?

base 2 - BIN - Binary
base 16 - HEX - Hexadecimal
base 64 - ???

Ярослав Горшков

72 101 108 108 111 44
119 111 114 108 100

MagicNumbers and Signature of Files

https://8ball.delegator.com/
https://8ball.delegator.com/magic/JSON/<Cquestion_string>

MagicNumber

AIDA 64 and Windows Reg

Java - MagicNumber

Compiled Java class files (bytecode) and Mach-O binaries start with hex
CAFEBABE.
When compressed with Pack200 the bytes are changed to
CAFED00D.

"File" utility for getting MIME types

$ file file.c
file.c: C program text
$ file program
program: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked
(uses shared libs), stripped

Executable

4D5A — signature of Windows Executable file (.EXE);
ELF - Executable and Linkable Format in Unix

1. ColorMania
DL: https://www.blacksunsoftware.com/colormania.html
AL: https://alternativeto.net/software/colormania/
2. Hexplorer
DL: https://sourceforge.net/projects/hexplorer/
AL: https://alternativeto.net/software/hexplorer/

Thanks for your attention :)