can't find that script on github. and i wouldn't recommend to run anything downloaded from discord that is not on project's github. sounds unsafe)
As mentionned above, the script is readable and you can edit it freely, its a simple shell script made to ease installation/compilation/configuration processes.
The script is fine to use, I already picked it apart to experiment with a similar source I've been playing around with.
Maybe I could post it on Github for people to use with an explanation of what everything does?