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 # links and ideas
 
+* systemd-nspawn doc and exercises
+	* [hub](https://hub.nspawn.org/images/)
+	* [systemd-sysext](https://0pointer.net/blog/testing-my-system-code-in-usr-without-modifying-usr.html)
 * [history of command line arguments](https://blog.liw.fi/posts/2022/05/07/unix-cli/)
-* [systemd-sysext](https://0pointer.net/blog/testing-my-system-code-in-usr-without-modifying-usr.html)
 * do a mini class on barshrc customisation, prompts, zsh and ohmyzsh
 * class on dpkg, apt, and .deb introspection
 * class on compiling a simple program, maybe recompiling a kernel