conticinio

dame la palabra que significa la quietud o silencio total de la noche.

La palabra exacta que buscas es
conticinio. 
Este término proviene del latín conticinium y se define específicamente como la hora de la noche en que todo está en silencio. Es un cultismo que describe ese momento de quietud absoluta cuando los sonidos del mundo cesan porque todos han entrado en el descanso. 

Otras palabras relacionadas con esta sensación son:

    Sosegamiento: El estado de calma o paz profunda.
    Recogimiento: El silencio introspectivo que suele acompañar a la noche.
    Nocturnidad: Aunque se refiere legalmente al tiempo de noche, poéticamente evoca la atmósfera de la oscuridad. 

me tira error me tiro de los pelos

Compila pero no hace lo que debe. En mi época universitaria el código de los libros de programación se publicaba sin una edición cuidadosa y nunca corrían:

❯ dotnet run -- link add --name 'ScanLibs' --url 'https://www.scanlibs.com'
Unhandled exception: System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at bookmarkr.BookmarkService.AddLinks(String[] names, String[] urls, String[] categories) in C:\csharpProjects\Building-CLI-Applications-with-C-Sharp-and-dotNET\bookmarkr\BookmarkService.cs:line 45
   at bookmarkr.Program.<Main>g__OnHandleAddLinkCommand|1_2(String[] names, String[] urls, String[] categories) in C:\csharpProjects\Building-CLI-Applications-with-C-Sharp-and-dotNET\bookmarkr\Program.cs:line 188
   at System.CommandLine.Handler.<>c__DisplayClass3_0`3.<SetHandler>b__0(InvocationContext context)
   at System.CommandLine.Invocation.AnonymousCommandHandler.<>c__DisplayClass2_0.<.ctor>g__Handle|0(InvocationContext context)
   at System.CommandLine.Invocation.AnonymousCommandHandler.InvokeAsync(InvocationContext context)
   at System.CommandLine.Invocation.InvocationPipeline.<>c__DisplayClass4_0.<<BuildInvocationChain>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass18_0.<<UseParseErrorReporting>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass13_0.<<UseHelp>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass22_0.<<UseVersionOption>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass20_0.<<UseTypoCorrections>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c.<<UseSuggestDirective>b__19_0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass17_0.<<UseParseDirective>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c.<<RegisterWithDotnetSuggest>b__6_0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass9_0.<<UseExceptionHandler>b__0>d.MoveNext()

Uno puede despelucarse tratando de hallar un bug.