Adding many categories

[awesomerobot (Kris)]

We have a guide for doing bulk options from the command line, including exporting/importing categories:

Administrative Bulk Operations

Below you will find a collection of bulk operations that can be initiated from the command line. You will need SSH access, so if you are a hosted customer, you will need to contact the Discourse team about running these commands. This topic is a wiki, so feel free to add or improve anything relevant. Before working with the console it is extremely important that you have a recent backup. Mistakes can always happen! First thing to do is enter your site’s container: cd /var/discours…

I’m not sure how many categories is “many many” but you might run into some performance issues (depending on how the categories are used) once you hit 500+. Using tags instead would avoid that.