How do I set the value in a command shell for dotnet core

Question

Running dotnet core command dotnet run in a command line I found this

You can opt out of telemetry by setting a DOTNET_CLI_TELEMETRY_OPTOUT environment variable to 1 using your favorite shell.

How do I set this variable?

Thanks for your time.

Answer 1

On Windows use

set DOTNET_CLI_TELEMETRY_OPTOUT=1 

to avoid that telemetry data is sent by dotnet.exe in the current command line session.

Or use

setx DOTNET_CLI_TELEMETRY_OPTOUT 1 

do disable this feature permanently.

Answer 2

To set environment variable only for current cmd session write set DOTNET_CLI_TELEMETRY_OPTOUT=1 or set DOTNET_CLI_TELEMETRY_OPTOUT=true (according to .NET Core Tools Telemetry)

To set environment variable permanently use setx instead of set.

Edit: For setx it has to be setx DOTNET_CLI_TELEMETRY_OPTOUT 1, and changes will only take effect when a new command window is opened - they do not affect the current CMD.

Developer Command Prompt is started with this .bat file: C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\Tools\VsDevCmd.bat so you can edit it and add permanent changes.