Dotnet installation

Hello,

I’ve followed the installation described on the below page :

But when launching the command “dotnet nuget add source …” I have the below errors :

Cannot execute because the specified command or file could not be found. Possible reasons are:
- You misspelled a built-in dotnet command.  - You intend to run a .NET program, but dotnet-exec does not exist. 
- You intend to run a global tool, but an executable with a dotnet prefix with this name is not found in the path.

Any idea on what’s wrong ?

You should transate it to English, not many here speak French (I assume)

Execution is impossible; Because the command specified or the file specified is inretrivable
Possible reasons are:
You misspelled it
You’re trying to execute an application dotnet, but dotnet doesn’t exist
You’re trying to launch a global utility, but with a dotnet prefix couldn’t be found

Something like that. Translation according to Yandex:

Unable to execute, because the specified command or file could not be found.
The possible reasons are the following :

  • You have misspelled a built-in dotnet command.
  • You intend to run a .NET program, but dotnet-exec does not exist.
  • You intend to run a global tool, but an executable with a dotnet prefix with this name cannot be found on the path.

Yes I have edited the message for the translation of the error raised by dotnet