Output depends if gradle its attached to a console

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1

Gradle has option console which behaves differently if gradle is not attached to a console. From docs:

--console=(auto,plain,rich,verbose)
...
Set to auto (the default) to enable color and other rich output in the console output 
when the build process is attached to a console, or to generate plain text only when not 
attached to a console. This is the default when Gradle is attached to a terminal.

When I run it locally with default parameter I see rich output, but when in Jenkins - plain.

What does is mean when program is attached to a terminal? Don’t we always run CLI programs through the terminal?

2

No, if you for example run it as Jenkins build or through IDE integration and os on, no terminal is attached.
Or if you redirect the output to a pipe like ./gradlew build | grep foo then also no terminal is attached to the process.

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