But of course, like any immutable system, there are mutable parts (otherwise, we couldn’t create any configuration files). OSTree handles this with “overlays” (actually, we use OverlayFS) that allow a read-write filesystem to be layered on top of the immutable system. For example, the /etc and /var directories are writable, while the rest of the system is read-only.
After implementing the Web streams spec multiple times across different runtimes and seeing the pain points firsthand, I decided it was time to explore what a better, alternative streaming API could look like if designed from first principles today.
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for i, n := range nums {
Ultrasonic speakers are lowered into the sea to test if they scare fish away
Close relatives of animals can become multicellular if distinct individuals join together or if dividing cells remain attached. A species has been found to use both mechanisms.