Bulk Edit of posts to add category

We need to add category to 800 blogs. Is there is any option to bulk add category to all post?

@ashokjajooyahoocom, Not by Grav, but...

• I guess most editors can do a search/replace in multiple files. At least VScode and IDEs from JetBrains can...
• and a shell command will also do the job: https://askubuntu.com/a/655497/874093