Changing the shell for system commands to mingw-w64

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Runpu
Runpu 2022-10-3
编辑： Mariam about 16 hours 前
Hi community,
I've been trying to use 'system' commands in MATLAB to execute operating system command (from MRtrix3 to be specific). However, to do so I need to change the shell from default to mingw-w64 for my windows laptop, which I've been struggling to do. While I've tryied things like:
setenv MATLAB_SHELL C:\msys2\mingw64.exe
inside my script before calling system comamnds, it doesn't actually work.
I wonder what can I do about this / what i did wrong.
Many thanks in advance
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dpb
dpb 2022-10-3
Is that documented anywhere, Walter? And what makes them special?
Walter Roberson
Walter Roberson 2022-10-4
Bottom of the system() page discusses MATLAB_SHELL and SHELL environment variables in the Unix section.

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回答（2 个）

Shivam
Shivam 2023-6-24
Hi, you can override an environment variable in the system command by modifying the command string. In your case, you want to set the MATLAB_SHELL variable to the path of the MinGW-w64 shell before executing your command.
Here's an example of how you can modify your system command to set the MATLAB_SHELL variable:
myPath = 'C:\msys2\mingw64.exe'; % Path to the MinGW-w64 shell
dosCommand = 'pacman -Su'; % For example
system(['set MATLAB_SHELL=' myPath ' && ' dosCommand])
Jeremy Hughes
Jeremy Hughes 2024-4-29
Ran in:
On Windows, the only way to do this is to launch the desired shell with the command as an argument.
I couldn't (quickly) find the argumnents for mingw64 how to do this, but for powershell this would look like:
dosCommand = "dir"; % Dos Command needs to be escaped correctly to pass quotes if needed.
wrappedCommand = sprintf('powershell --command "%s"',dosCommand)
wrappedCommand = 'powershell --command "dir"'
system(wrappedCommand)
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Mariam
Mariam about 16 hours 前
编辑：Mariam about 16 hours 前
Hello Jeremy, I tried this approach by running:
command = "echo $PATH";
wrappedCommand = sprintf('mingwenv.cmd --command "%s"',command)
system(wrappedCommand)
but it only opens the mingwenv window and doesnt run any command i give it. do you have any idea what can be done in this case?

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