December 2018
Beginner
826 pages
22h 54m
English
Content preview from Linux Administration Cookbook
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How it works...
Snaps work like any other package manager, installing and managing packages brought in from a repository on your system.
You'll also have noticed the core installation on our list of installed snaps; this is effectively the base platform that snaps work on top of.
snapd is the daemon that underpins snaps; it's the environment that manages the installed snaps, dealing with installs, updates, and deletion of old versions.
When you install a snap, what you actually download is a read-only squashfs file that lives in /var/lib/snapd/snaps/:
$ lscore_5548.snap lxd_8959.snap partial
The numbers are snap revision numbers.
When these squashfs images are mounted by snapd, you can see them personified as loop devices with df:
$ df -h ...
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