How to copy all json file to new folder in Net Core ?

### Steps to reproduce

On windows I use this command :
```

..\
IF NOT EXIST "$(TargetDir)DataFiles" MKDIR "$(TargetDir)DataFiles"
FOR /R "$(SolutionDir)\Api.Tests\Scenarios" %25%25f IN (*.json) DO COPY "%25%25f" "$(TargetDir)DataFiles\" /Y

```

On linux , I have this kind of error

```
Build FAILED.
[12:44:39][Step 1/1]
[12:44:39][Step 1/1] /usr/share/dotnet/sdk/2.1.302/Microsoft.Common.CurrentVersion.targets(1331,5): error MSB3073: The command "IF NOT EXIST "DataFiles" MKDIR "DataFiles"" exited with code 127. [/opt/jetbrains/buildAgent/work/4fc9032bf5656724/Api.Tests/Api.Tests/IApi.Tests.csproj]
[12:44:39][Step 1/1] 0 Warning(s)
[12:44:39][Step 1/1] 1 Error(s)
```