Windows environment variables

A collection of simple utilities to manage Windows environment variables, created mainly to:

• learn a bit of Haskell,
• make it easier to add directories to the PATH variable, list missing directories in your PATH, etc.

Building

Using stack:

> stack setup
...

> stack build
...

To prepare for making a release the following commands might be useful:

> stack build --install-ghc --copy-bins --local-bin-path ..\windows-env-x86 --arch i386
...

> stack build --install-ghc --copy-bins --local-bin-path ..\windows-env-x64 --arch x86_64
...

Installation

> stack install
...

Usage

The complete list of utilities is given below.

• paths — List directories in your PATH.
• addpath — Add directories to PATH.
• delpath — Remove directories from PATH.
• setenv — Assign values to environment variables.
• delenv — Delete environment variables.

Pass the --help flag to an utility to examine its detailed usage information. Some examples are given below.

paths

List directories in your PATH:

> paths
C:\Program Files\Haskell\bin
C:\Program Files\Haskell Platform\8.0.1\lib\extralibs\bin
C:\Program Files\Haskell Platform\8.0.1\bin
C:\Users\Egor\AppData\Roaming\local\bin
C:\Users\Egor\AppData\Roaming\cabal\bin
...

Only list missing directories in your PATH:

> paths --missing
C:\Users\Egor\AppData\Roaming\cabal\bin
...

addpath

Add "C:\test" to current user's PATH:

> addpath C:\test
Saving variable 'PATH' to 'HKCU\Environment'...
        Old value: C:\Users\Egor\AppData\Roaming\local\bin;C:\Users\Egor\AppData\Roaming\cabal\bin
        New value: C:\Users\Egor\AppData\Roaming\local\bin;C:\Users\Egor\AppData\Roaming\cabal\bin;C:\test
Continue? (y/n) y

Add "C:\test" to the global PATH, skipping the confirmation prompt:

> addpath --global -y C:\test

delpath

Remove "C:\test" from current user's PATH:

> delpath C:\test
Saving variable 'PATH' to 'HKCU\Environment'...
        Old value: C:\Users\Egor\AppData\Roaming\local\bin;C:\Users\Egor\AppData\Roaming\cabal\bin;C:\test
        New value: C:\Users\Egor\AppData\Roaming\local\bin;C:\Users\Egor\AppData\Roaming\cabal\bin

Remove "C:\test" from both current user's and the global PATHs, skipping the confirmation prompt:

> delpath --global -y C:\test

setenv

Assign bar to the variable foo in current user's environment, skipping the confirmation prompt:

> setenv -y foo bar

Assign bar to the variable foo in the global environment:

> setenv --global foo bar
Saving variable 'foo' to 'HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment'...
        New value: bar
Continue? (y/n) y

delenv

Delete the variable foo from current users's environment, skipping the confirmation prompt:

> delenv -y foo

Delete the variable foo from the global environment:

> delenv --global foo
Deleting variable 'foo' from 'HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment'...
Continue? (y/n) y

License

Distributed under the MIT License. See LICENSE.txt for details.