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Linux Command Line & Bash Scripting Mastery · Lesson

Managing Environment Variables (export, unset)

Learn to set, export, and unset environment variables, understanding their scope and impact on programs.

What Are Environment Variables?

Welcome! Today we'll explore environment variables, a core concept in Linux. Think of them as special values that your shell and programs can read to configure their behavior.

They're like global settings for your command-line environment.

Viewing Existing Variables

You already have many environment variables set! You can view them using the printenv or env commands. Let's see a few:

printenv | head -n 5

All lessons in this course

  1. Managing Environment Variables (export, unset)
  2. Shell Startup Files (.bashrc, .profile)
  3. Package Management (apt, yum, pacman)
  4. Understanding and Customizing the PATH Variable
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