Export environment variable WSL.

Hi,

I have Windows Subsystem for Linux (WSL).

In a Matlab script, I want to run some bash commands and scripts, so I do:

system('wsl <script>')

But doesn't work when trying to export an environment variable:

system('wsl export FREESURFER_HOME=\"~/freesurfer\"')
system('wsl echo ${FREESURFER_HOME}')

This returns 0 for both lines (no error) but yet the variable FREESURFER_HOME is not exported.

I also tried to use the setenv command but this adds the variable to the windows environment, not the WSL one:

setenv('FREESURFER_HOME', "~/freesurfer");
system('wsl ${FREESURFER_HOME}')     % WSL
%   -> *nothing*
system('echo %FREESURFER_HOME%')     % Windows
%   -> ~/freesurfer\

Any idea on how to export an environment variable in the WSL environment ?

Thanks

Answer 1

[Yongjian Feng]

This is how you set env in wsl:

https://dev.to/kapilgorve/set-environment-variable-in-windows-and-wsl-linux-in-terminal-3mg4