# Introduction ## About Here is a small space for me to write down some notes while studying. I may not sort this up or make a pretty layout. After all, this is self-oriented, though everyone could access it if he wants. ## Why I use GitBook I'm a user of GitBook years ago. I wrote something about Ubuntu and PokemonGo, but finally gave it up due to low network speed and blocked access. Now the UI and logic of GitBook have changed totally, I'd like to give it another try. ## Why I drop GitBook after 5 minutes' trying The service seems to be rough. It cannot migrate my legacy books, nor export as a PDF. The biggest problem is that there is not a Desktop app. I don't want to open a website to write things every day. Bye! --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://blog.nogeek.top/master.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.