mdbook: add page (#4351)

pages/common/vagrant.md

@@ -26,3 +26,7 @@
 - Connect to machine via SSH:
 
 `vagrant ssh`
+
+- Output the SSH configuration file of the running Vagrant machine:
+
+`vagrant ssh-config`

pages/linux/mdbook.md

@@ -0,0 +1,24 @@
+# mdbook
+
+> Create online books by writing makrdown files.
+> More information: <https://rust-lang.github.io/mdBook/>.
+
+- Create a mdbook project in the current directory:
+
+`mdbook init`
+
+- Create a mdbook project in a specific directory:
+
+`mdbook init {{path/to/directory}}`
+
+- Clean the directory with the generated book:
+
+`mdbook clean`
+
+- Serve a book at `http://localhost:3000`, auto build when file changes:
+
+`mdbook serve`
+
+- Watch a set of markdown files and automatically build when a file is changed:
+
+`mdbook watch`