Linux Document Viewer

1. Download the corresponding version zeal:https://zealdocs.org/download.html

For example, I am the Ubuntu counterpart command is:

sudo add-apt-repository ppa:zeal-developers/sudo apt-sudoinstall Zeal

Execute command: Zeal will open the Zeal Viewer, select the document you want to download in File->option->docsets.->download->ok

This allows you to view it, and it can be viewed offline.

2. Many people are accustomed to viewing CHM documents in Windows, but these cannot be opened directly under Linux and can be downloaded Xchm plugin open. (You can try it if you haven't tried it.)

Linux Document Viewer