How to change the script attached to the Google spreadsheet from the outside?

Question

Google Apps Script

Good afternoon. Recently there was a task - to upload a couple of dozen files of xslx / odt formats to Google Drive, convert them to Google spreadsheets, correct styles, insert several sheets according to the template and add a bunch of scripts to each.
If the first points were easily automated, then the last one could not solve it with a swoop. Made by hand. Although I spent a little time, the idea stuck in my head. mechanical work is not for me at all.

Actually the question is: how to add / change / get the text . gs script for an arbitrary table?

Answer 1

This can be done through the Script API

• Create https://developers.google.com/apps-script/api/ref...
  
• Get content https://developers.google.com/apps-script/api/ref...
  
• Rewrite https: //developers.google.com/apps-script/api/refe ...
  

There are a lot of subtleties that go into the development history of the service, so if you have nodejs in your environment, then I would recommend using the cli for Google Apps Script projects @google/clasp .