Error message 'No executable found matching command "dotnet-ef"' when executing 'dotnet ef'

Steps to reproduce

• Open this manual: .NET Core - New Database
• Follow the Steps “Prerequisites” and “Create a new project”
• Since there is no project.json file, skip the step “Install Entity Framework” and add the following to the .csproj file:

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="1.1.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.0">
      <PrivateAssets>All</PrivateAssets>
    </PackageReference>
  </ItemGroup>
  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp1.1' ">
    <PackageReference Include="Microsoft.NETCore.App" Version="1.1.0" />
  </ItemGroup>
  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.1.0-preview4" />
  </ItemGroup>

• Run dotnet restore
• Follow the step “Create your database”

Expected behavior

• The file /Blogging.db gets created

Actual behavior

• The error message No executable found matching command "dotnet-ef" appears.

Environment data

dotnet --info output:

.NET Command Line Tools (1.0.0-rc3-004530)

Product Information:
 Version:            1.0.0-rc3-004530
 Commit SHA-1 hash:  0de3338607

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.14393
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\1.0.0-rc3-004530

[MovGP0]

the issue is that I’ve used the wrong tool reference. This one works:

<DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.0-msbuild3-final" /> 

[MovGP0]

if it is searching for the project.json file, then it’s an old version of the tools. however, the version for Mac might not be finished yet.