Howdy, Magento Owners!!
A progress bar is used to show how far a user action is still in process until it's completed. But it takes longer than needed in Magento 2. To Increase the speed learn How to Add a Progress Bar using Custom CLI Command in Magento 2.
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Complete Tutorial at: https://magecomp.com/blog/add-progress-bar-using-custom-cli-command-magento-2/