ubuntu core (16.04) 移植到ARM

1.  先從snap 包講起

ubuntu core 基本上是諸多snap 包堆積起來的一個系統，正如傳統的ubuntu 是debian 堆積起來的一樣。但不同的是ubuntu core 也是一個snap 包， 甚至 kernel， uboot 也分別是一個snap 包。因此，就讓我們先 瞭解下snap 包 是個甚麼東東吧。

1.1 什麼是snap ？

A snap :

• is a squashFS filesystem containing your app code and a snap.yaml file containing specific metadata. It has a read-only file-system and, once installed, a writable area.

• is self-contained. It bundles most of the libraries and runtimes it needs and can be updated and reverted without affecting the rest of the system.

• is confined from the OS and other apps through security mechanisms, but can exchange content and functions with other snaps according to fine-grained policies controlled by the user and the OS defaults. 

 

2.  關於ubuntu core

3. 移植ARM 版本的ubuntu core

4. ubuntu core 的使用注意細節