[ TIL ] Operating System | Package Managing

Software Packages

Windows

• .exe -> Executable File
• .msi -> Microsoft install packages

Linux

• .rpm -> Redhat Package Manager packages
• .deb -> Debian Packages (Ubuntu)

sudo dpkg -i {package name} : install
sudo dpkg -r {package name} : remove
dpkg -l : list packages installed

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Archives

-> comprised of one or more files compressed into single file
Package archives -> the core or source software files that are compressed into one file ex) .tar , .zip, .rar

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Package Dependencies

Having Dependencies
Counting on other pieces of software to make asn 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

Windows

DLL
Dynamic Link Libraries
SxS
manage most of the shared libraries like dlls
C:\Windows\WinSxS
Chocolatey
a place where all kinds of windows software packages live

Linux

dpkg -i -> doesnt install dependencies. if dependecy error occurs, you need to install the dependencies one by one.
to solve this complexity, use Package Manager

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Package Managers

Make sure that the process of software installation, removal, update and dependency management is as easy and automatic as possible

apt -> Advanced Package Tool

• extends the functionality of dpkg
• installs package dependencies
• makes it easier to find packages to install
• cleans up packages not needed

usage

• sudo apt install {package}
• sudo apt remove {package}
• sudo apt update -> updates the list of packages in your repository so you get the latest versions
• sudo apt upgrade -> install all outdated softwares automatically

Personal Package Archives (PPA)

A software repository for uploading source packages to be build and published as an Advanced Packaging Tool(apt) repository by Lunchpad.

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