Prerequisites
porter delete deletes applications, jobs or addons in a specific cluster and namespace.

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porter delete application

To delete an application in the default namespace, simply run: 
porter delete application app-name
To delete an application in a different namespace, run: 
porter delete application app-name --namespace my-custom-ns

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porter delete job

To delete a job in the default namespace, run: 
porter delete job job-name
To delete a job in a different namespace, run: 
porter delete job job-name --namespace my-custom-ns

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porter delete addon

To delete an addon in the default namespace, run: 
porter delete addon addon-name
To delete an addon in a different namespace, run: 
porter delete addon addon-name --namespace my-custom-ns

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porter delete helm

To delete a helm repo from a project, run: 
porter delete helm repo-name