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SOS installer (dotnet-sos)

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This article applies to: ✔️ .NET Core 2.1 SDK and later versions

Install

There are two ways to download and install dotnet-sos:

Synopsis

dotnet-sos [-h|--help] [options] [command]]

Description

The dotnet-sos global tool installs the SOS debugger extension. This extension lets you inspect managed .NET Core state from native debuggers like lldb and windbg.

Note

Installing SOS via the dotnet-sos tool is only needed on Linux or macOS. It may also be needed on Windows if you're using older debugging tools. Recent versions of the Windows Debugger (>= version 10.0.18317.1001 of WinDbg or cdb) load SOS automatically from the Microsoft extension gallery.

Options

  • --version

    Displays version information.

  • -h|--help

    Shows command-line help.

dotnet-sos install

Installs the SOS extension locally for debugging .NET Core processes. On macOS and Linux, the .lldbinit file will be updated so that the extension automatically loads at lldb startup. If you're installing SOS on Windows with older debugging tools (prior to version 10.0.18317.1001), you will need to manually load the extension in WinDbg or cdb by running .load %USERPROFILE%\.dotnet\sos\sos.dll in the debugger.

Synopsis

dotnet-sos install [--architecture <arch>]

Options

  • --architecture <arch>

    Specifies the processor architecture of the SOS binaries to install. By default, dotnet-sos installs the architecture of the host machine. Use this option when you want to install SOS for an architecture that's different from the dotnet host architecture. For example, if you're running Arm32 binaries from an Arm64 host, you will need to install SOS with dotnet-sos install --architecture Arm.

    The following architectures are available:

    • Arm
    • Arm64
    • X86
    • X64

dotnet-sos uninstall

Uninstalls the SOS extension and, on Linux and macOS, removes it from lldb configuration.

Synopsis

dotnet-sos uninstall