Windows PATH System Variable

Introduction

If you need to configure PATH in Linux, go here

Usage

When you execute a command in the console, the system looks for a match between the command name and a program that can be executed.

Searching the entire hard drive would be too time-consuming, so the search is performed only in certain directories.

The list of these special directories is stored in the PATH system variable.

Example

Let's assume you need to run a program, such as Firefox , directly from the command line.

Without prior preparation, entering Firefox into the console will produce an error.

C:\Users\a>firefox

'firefox' is not recognized as an internal or external command, operable program or batch file.

To solve this problem, you need to add the directory with the Firefox executable to your PATH.

Add to PATH using PowerShell

Append the current directory to the end

$Env:Path += ";$pwd"

$Env:Path += ';' $Env:Path += $pwd

Add current directory to beginning

$CUR_DIR = "${pwd};" $Env:Path = $CUR_DIR + $Env:Path

Add directory with current user dependency to top

$CURRENT_USER = $Env:Username $LOCAL_PY_PATH = 'C:\Users\' + $CURRENT_USER + '\AppData\Local\Programs\Python\Python312-32\;' $Env:Path = $LOCAL_PY_PATH + $Env:Path

Firefox

$Env:Path += ';C:\Program Files\Mozilla Firefox'

Python

$Env:Path += ';C:\Users\Andrei\AppData\Local\Programs\Python\Python312'

CMake from Visual Studio

$Env:Path += ';C:\Program Files\Microsoft Visual Studio\2022\Enterprise\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin'

Postgres

$Env:Path += ';C:/Program Files/PostgreSQL/12/bin'

Tesseract

$Env:Path += ';C:/Program Files/Tesseract-OCR'

$Env:Path += ';C:\Users\$Env:Username\AppData\Local\Programs\Tesseract-OCR'

Node.js

$Env:Path += ';C:/Program Files/nodejs'

Add directory to PATH

A quick way to edit PATH:

Press the Win key and search for env

Step-by-step method:

Right-click This PC → Properties

Advanced system settings

Advanced → Environment Variables

If you want to change it for the entire system, do it in the window

System Variables

Find the PATH line in the System variables block click to highlight it and click the Edit... button

If you want to change the path only for your user, do so in the block

User variables for %USERNAME%

Тew

Enter the address of the directory where the desired program is located. In our case, it is

C:\Program Files (x86)\Mozilla Firefox

Restart the console or open a new one and write firefox there.

C:\Users\a>firefox

The browser should start.

Examine the contents of PATH

In PowerShell simply execute

$Env:Path

or

echo $Env:Path

C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;

or

Get-ChildItem Env:Path

Name Value ---- ----- Path C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPo...

In cmd.exe, you can view a list of environment variables by running the command set without parameters.

set

The output contains system and user variables as well as additional information. The contents of PATH are highlighted in green.

Errors

-bash: syntax error near unexpected token `('

You're most likely trying to add a Windows address to the Unix PATH, complete with spaces, brackets, and so on.

For example:

andrey@olegovich-10:/usr/share$ export PATH=/mnt/c/Program Files (x86)/Common Files/Oracle/Java/javapath_target_1128437:$PATH

-bash: syntax error near unexpected token `('

To solve this problem, you need to escape spaces and parentheses. If you're importing many paths and the input is very long, it's a little easier to write PATH=$PATH:/path if you prefer to append it to the end.

Also, remember that any extra spaces will break the import. To check, you can make the entire script on one line in a text editor.

Also, remember that if you're working in WSL , you need to set environment variables through Windows.

andrey@olegovich-10:/usr/share$ export PATH=$PATH:/mnt/c/Program\ Files\ \(x86\)/Common\ Files/Oracle/Java/javapath_target_1128437

Postgesql

Here's an example for using psql from WSL and Git Bash - this can be useful if you want to temporarily add the path to psql to your PATH to run Postgres a script.

In my case, psql.exe is located in the folder C:\Program Files\PostgreSQL\12\bin

В WSL

PATH=$PATH:/mnt/c/Program\ Files/PostgreSQL/12/bin

В Git Bash

PATH=$PATH:/c/Program\ Files/PostgreSQL/12/bin

In PowerShell You can check for the presence of a path to Postgres using Select-String

echo $Env:Path | Select-String Postgres

You can add the path to Postgres to the end of Path like this:

$Env:Path += ';C:/Program Files/PostgreSQL/12/bin'

Add to beginning of Path

$Env:Path = ';C:/Program Files/PostgreSQL/12/bin' + $Env:Path