Suraj Deshmukh

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Cobra and Persistentflags gotchas

How wrong usage of persistent flags can burn you

Suraj Deshmukh

3-Minute Read

If you are using cobra cmd line library for golang applications and it’s PersistentFlags and if you have a use case where you are adding same kind of flag in multiple places. You might burn your fingers in that case, if you keep adding it in multiple sub-commands without giving it a second thought. To understand what is really happening and why it is happening follow along.

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I am a Senior Software Engineer at Microsoft, working on various tooling around container technology like Docker, Kubernetes, etc.