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export

file managementLinux/Unix
The export command is one of the most frequently used commands in Linux/Unix-like operating systems. export Sample fallback description for export
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Quick Reference

Command Name:

export

Category:

file management

Platform:

Linux/Unix

Basic Usage:

export [options] [arguments]

Common Use Cases

  • 1

    Environment configuration

    Make variables available to all child processes

  • 2

    Program configuration

    Set up environment variables to control program behavior

  • 3

    Development setup

    Configure development environments with appropriate variables

  • 4

    Path management

    Modify PATH and other search path variables for command lookup

Syntax

export [OPTION]... [FILE]...

Options

Option Description
-l Use a long listing format
-a Show hidden entries starting with .
-h Human-readable sizes
-R List subdirectories recursively

Examples

How to Use These Examples

The examples below show common ways to use the export command. Try them in your terminal to see the results. You can copy any example by clicking on the code block.

Basic Examples:

ls
List files in the current directory.
ls -l
List files in long format with details.
ls -a
List all files including hidden ones.

Advanced Examples:

ls -lah Detailed list with human-readable sizes. ls -R List directories recursively.

Try It Yourself

Practice makes perfect! The best way to learn is by trying these examples on your own system with real files.

Understanding Syntax

Pay attention to the syntax coloring: commands, options, and file paths are highlighted differently.

Notes

These are sample notes for the export command.

Tips & Tricks

1

Variables set with export are only available for the duration of the current shell session

2

Add exports to ~/.bashrc or ~/.profile for persistent environment variables

3

Use export -p to see all exported variables

4

Use export -n VARIABLE to unexport a variable without unsetting it

5

When extending PATH, use export PATH=$PATH:/new/path to append or export PATH=/new/path:$PATH to prepend

Common Use Cases

Environment configuration

Make variables available to all child processes

Program configuration

Set up environment variables to control program behavior

Development setup

Configure development environments with appropriate variables

Path management

Modify PATH and other search path variables for command lookup

Shell customization

Set persistent variables for shell behavior and appearance

Related Commands

These commands are frequently used alongside export or serve similar purposes:

env
printenv
set
unset
declare
bash
source
echo
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Use Cases

1

Environment configuration

Make variables available to all child processes

2

Program configuration

Set up environment variables to control program behavior

3

Development setup

Configure development environments with appropriate variables

4

Path management

Modify PATH and other search path variables for command lookup

5

Shell customization

Set persistent variables for shell behavior and appearance

Learn By Doing

The best way to learn Linux commands is by practicing. Try out these examples in your terminal to build muscle memory and understand how the export command works in different scenarios.

See ExamplesTry Lab Exercises
$ export
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