A Package Manager is a piece of software that automates the downland and install process for other software. Many operating systems (and some applications!) come with their own package managers. Other operating systems have third party package managers that can be easily installed and drastically expedite and simplify your install processes.
Getting warm in San Francisco is almost always a challenge, and even a high rent doesn’t guarantee your apartment will include adequate heat. Buildings are old, uninsulated, and drafty—the triple threat for those who like to be able to comfortably walk about their apartment in our overly-valued draconian conditions—if they even have heat.