Linux Terminal Command: export

The export command is an essential tool in Foundations & Navigation. In this tutorial, we will explore what export does, look at everyday examples, and cover advanced options to supercharge your command-line workflow.

Concept & Explanation

The export command marks shell variables to be exported to child processes, making them global environment variables.

Common Options & Syntax

export [options] [arguments]

Here are the most common flags used with export:

Simple Usage: Basic default commands.
Detailed View: Shows diagnostic information.
Advanced Actions: Can chain parameters for scripting.

1. Interactive Example (Simple)

Here is how most people run the command:

# Example
export EDITOR=vim

What it does: Sets the default editor to Vim.

2. Power-User Example (Advanced)

For scripting and advanced diagnostics, use this configuration:

# Advanced
export PATH=$PATH:/opt/bin

What it does: Appends /opt/bin to the active shell lookup path.

⚙️ Warning & Common Pitfalls

[!WARNING] Exporting variables only affects child processes. You cannot modify the variables of the parent shell that launched your process.

Here are some related posts on cli_tty1 you might want to check out:

ls : List directory contents.
cd : Change the current working directory.
pwd : Print name of current/working directory.