Environment.ahk

Add, delete, sort, and backup Windows environment variables including PATH.

Note for v2

In the AutoHotkey v2 version of this script an OSError is thrown instead of the error value "-1".

Features

• Automatic REG_SZ and REG_EXPAND_SZ detection
• Backup before you make any changes with EnvUserBackup() and EnvSystemBackup()
• Sort your messy Windows PATH in alphabetical order and remove duplicate entries.
• Edit both system and user path with separate commands.
• Broadcast changes to PATH in the current AutoHotKey script and System-wide.
• Supports relative paths with just in time conversion.

Quick Start

1. Rename Environment (for v1).ahk to Environment.ahk.
2. In the same directory create a new script with the following code.

#include Environment.ahk
Env_UserBackup(), Env_SystemBackup()      ; Always backup!
MsgBox % userpath := Env_UserRead("PATH") ; Display the user path.

Create a Backup before you regret it.

Env_UserBackup()
Env_SystemBackup()

Add a directory to user PATH

Env_UserAdd("PATH", "C:\bin")

Remove a directory from user PATH

Env_UserSub("PATH", "C:\bin")

Using a Relative Path

Env_UserAdd("PATH", "..\project1\bin")

Create a new Environment Variable

Env_UserNew("NUMBER_OF_GPU_CORES", "9")

Read an existing Environment Variable

key := Env_UserRead("NUMBER_OF_GPU_CORES")
; returns 9

Delete an Environment Variable

Env_UserDel("NUMBER_OF_GPU_CORES")

Use EnvSystem to edit the System Environment Variables

Env_SystemAdd("PATH", "X:\Backup\bin")

Sort System PATH in alphabetical order

Env_SystemSort("PATH")

Remove Duplicates from System PATH and sort in alphabetical order

Env_SystemRemoveDuplicates("PATH")

Note: EnvSystem commands need to be Run As Administrator, with the exception of EnvSystemRead() and EnvSystemBackup().