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Most dotnet commands I run on my Ubuntu 20.04 system gives me the error:
Segmentation fault (core dumped)

I tried rerunning the dotnet installation scripts and I tried modifying the stack size with uint -n (as advised on the internet). (It's important to note that I was using the backend of an app on dotnet without any problems, and this error seems to have come out of nowhere.)

I cannot find a solution for this. What can I do to fix this?

The following commands produce the segfault:

  • dotnet -h
  • dotnet --info

The following commands do not produce a segfault:

  • dotnet (without any arguments)
  • dotnet --list-sdks
  • dotnet --list-runtimes

I used the official microsoft documentation from here https://docs.microsoft.com/en-us/dotnet/core/install/linux-ubuntu to install .NET and it ran just fine until a few days ago.

EDIT: Upon further investigation, I found out that if I uninstall the SDK I stop getting the error but as soon as I reinstall, it reapears.

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    Please don't post screenshots of terminal output - you should edit your question and copy/paste the text from the terminal window.
    – guntbert
    Jul 24 '20 at 22:59
  • Follow @guntbergs advice and also add the commands you used to install it. Make sure to use markdown syntax (see stackoverflow.com/editing-help#code )
    – Garo
    Jul 25 '20 at 0:08
  • You say “Any dotnet command I run … gives me [this] error”, but your screenshot shows otherwise. Jul 25 '20 at 0:41
  • I improved your question but you still have to add the installation commands that you used
    – Garo
    Jul 25 '20 at 0:57
  • Thanks for improving my question :) . I didn't inculde the installation process because I had no problem running the command a few days ago, and I didn't make any important changes to the system that shouldw influenced the sdk. Anyways, I put the official microsoft instalation instructions, as those are what I used. Jul 25 '20 at 8:15
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I had this problem using the dotnet installed via snap. I uninstalled and installed directly, via APT. Now it works perfectly. I used the commands from the following link: Dotnet Core

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