Sorry I forgot to write the URL and thank you for the working link. Here was the URL I meant https://xubuntu.github.io/xubuntu-docs/user/C/index.html and the PDF links still returned 404 even now. However, for your link, I can confirm yes the PDF files work fine. Note: your link shows a 2017 date, while my link shows a 2022 date.
Sorry I forgot to write the URL and thank you for the working link. Here was the URL I meant https:/ /xubuntu. github. io/xubuntu- docs/user/ C/index. html and the PDF links still returned 404 even now. However, for your link, I can confirm yes the PDF files work fine. Note: your link shows a 2017 date, while my link shows a 2022 date.
Best regards,
Malsasa