Note
Starting with .NET Core 2.0, you don't have to run dotnet restore because it's run implicitly by all commands, such as dotnet build and dotnet run, that require a restore to occur. It's still a valid command in certain scenarios where doing an explicit restore makes sense, such as continuous integration builds in Azure DevOps Services or in build systems that need to explicitly control the time at which the restore occurs.
This command also supports the dotnet restore options when passed in the long form (for example, --source). Short form options, such as -s, are not supported.