how to install apt-get in linux code example

Example 1: apt-get install

# first make sure all systems are up to date (raspberry pi)
sudo apt-get update && sudo apt-get upgrade

# install the desired package
sudo apt-get install <package name> or <download link>

Example 2: apt-get install plex

curl https://downloads.plex.tv/plex-keys/PlexSign.key | sudo apt-key add -