rubyu/path-override

Executes a program with modified PATH environment

What is this?

This example modifies the Windows's PATH environment and executes specified program.

How useful is this?

This can make it easy that a program runs in the isolated environment.

How to use?

Get the file from Git.

> git clone https://github.com/rubyu/path-override.git

> cd path-override

Here we will try to make an Anaconda environment named IsolatedEnv, for example.

> conda create -n IsolatedEnv python=2.7

Let's try to activate it.

> call %userprofile%\Anaconda3\Scripts\activate.bat %userprofile%\Anaconda3\envs\IsolatedEnv

If it goes well, let's save the PATH in a file so as not to forget it.

> ECHO %PATH% > path.txt

There is nothing to do in this environment anymore. Let's deactivate.

> deactivate

and, then call the executable file in IsolatedEnv. Please note that python.exe exists below the folder %userprofile%\Anaconda3\envs\IsolatedEnv.

> path-override.py path.txt %userprofile%\Anaconda3\envs\IsolatedEnv\python.exe --version

The result is the following.

exec_file: C:\Users\user\Anaconda3\envs\IsolatedEnv\python.exe
path_file: path.txt
args: ['--version']
return_code: 0
Python 2.7.14 :: Anaconda, Inc.

Why did not you use BAT or VBS?

Microsoft seems to have a unique view on calling process, especially about arguments. Regarding the escaping of arguments, it is a special one unparalleled. Let's not approach them unless necessary.