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Shadow Cipher

Package and Software management

Windows: Software Packages

  • Executable file(.exe) Contain instructions for a computer to execute when tyey’re run

  • PE Format

  • Microsoft install package(.msi) Used to guide a program called the Windows installer in the installation, maintainance, and removal of programs on the windows Operating Syste.

  • Window Store

  • APPX

  • C:\users\cindy\Desktop\hello.exe

  • \?

Linux: Software Packages

  • Debain
  • Packaged as .deb file for debian.
  • dpkg
  • sudo dpkg -i atom-amd64.deb
  • sudo dpkg -r atom
  • dpkg -l
  • dpkg -l | grep atom

Mobile App packages

  • Mobile Applications

  • App Stores A central, managed marketplace for app developers to publish and sell mobile apps.

  • App store app

  • App store service

  • Enterprize app management

  • Mobile device management

  • Side-loading Where you install mobile apps directly, without using an app store

  • Mobile apps are standalone software packages, so, they contain all their dependecies

  • Cache

  • Clearing the cache will remove all changes to the settings, and sign out of any accounts that app was signed into.

Windows: Archives

  • Archive Comprised of one or more files that’s compressed into a single file.

  • Package archives The core or source software files that are compressed into one file

  • Installing from source

  • .zip

  • .tar

  • .rar

  • 7-zip

  • compress-Archive -Path C:\Users\Cindy\Desktop\coolFiles ~\Desktop\Archive.zip

Linux Archives

  • To extract a file using 7zip, use the command 7z and the flag e for extract and then the file you want to extract.

  • ls

  • 7z e my_archive.tar

Windows: Packages Dependencies

  • Having dependecies Counting on other pieces of software to make an application work, since one bit of code depends on another , in order to work

  • Library A way to package a bunch of useful code that someone else wrote

  • Dyanamic-link Libraries

  • Side-by-side Assemblies

  • C:\Windows\WinSxS

  • Manifest

  • Find-Package

  • cmdlet

  • Sysinternals packges

  • Package Management

  • Chocolately

  • sysinternals -IncludeDependencies

  • Register-PackageSource

  • -Name chocolatey -ProviderName chocolatey -Location https://chocolatey.org/api/chocolatey

Linux: Package Dependencies

  • Package managers Come with the works to make package installation and removal easier, including installing packages dependecies.

Windows: Package manager

  • apt

  • Package manager Make sure that the process of software installation, removal, update, and dependecy management is as easy and automatic as possible.

  • SCCM

  • Puppet

  • Install-Packages

  • Install -package -Name sysinternals

  • Get-Package -name sysinternals

  • uninstall-Package -Name sysinternals

Linux: Package manager

  • GIMP

  • sudo apt install zgimp

  • sudo apt remove zgimp

  • Repository

  • Repositories Servers that act like a central storage location for packages

  • Register-PackageSource

  • The repository source file in ubuntu is /etc/apt/sources.list

  • Perosnal Package Archives

  • apt update

  • apt upgrade

  • sudo apt update

  • apt -help

Windows: Underneath the Hood

  • Process Monitoring
  • Orca.exe
  • Software development kit

Linux: Underneath the Hood

  • ls -l Flappy\ App/

Windows: Devices and Drivers

  • Drivers Used to help our hardware devices interact with our Operating System.

  • GUI

  • Hardware ID

Linux: Devices and Drivers

  • /dev

  • Character devices Like a keyboard or a mouse, transmit data character by character

  • Block devices Like USB drives, hard drives and CDROMs, transfer blocks of data block is just a unit of a data storage

  • /dev/sda

  • /dev/sdb

  • Kernal Module

Windows: Operating System updates

  • Security patch Software that’s meant to fix up a security hole
  • The Windows Update Client Services