Where are the stock-icon-names defined for the unity-panel-service indicators and notify-OSD?

Question

Layout cases in the Notification | Ubuntu App Developer document states that

... using non-existing (stock-)icon-names ... use one of the new icon-name (see icons) ...

and that this (icons at http://wiki.ubuntu.com/mhall119/devportal/notify-osd#icons) only makes casual reference, via the examples, to

... -i notification-message-im
... -i notification-network-wireless-disconnected

Presumably

... -i notification-network-wireless-connected

is also one?
Confirmed via: (interesting icon)

notify-send "WiFi icon test" -i notification-network-wireless-connected

What other ones are there?

(note that the icons link in the source:
wiki.ubuntu.com/mhall119/devportal/notidy-osd#icons
incorrectly spells notify as notidy)

---

As a consequent of the implications of this answer:

Where are the stock-icon-names defined for the unity-panel-service indicators and notify-OSD?

the icons in the above examples could then be found here:
- file:///usr/share/notify-osd/icons/gnome/scalable/status/
- file:///usr/share/notify-osd/icons/hicolor/scalable/status/

However,while there was no icon file named notification-network-wireless-connected that string displays notification-network-wireles.svg as does notification-network-wireless-gobledeegook!

Bookmark:
Where are the stock-icon-names defined for the unity-panel-service indicators and notify-OSD?

Answer 1

notify-send uses icon from the /usr/share/icons/gnome/32x32 (& also /usr/share/notify-osd/icons/...)

devav2@devav2:/usr/share/icons/gnome/32x32$ ls 
actions  categories  emblems  legacy     places  ui
apps     devices     emotes   mimetypes  status

Every directory above (except legacy) contains a set of icons available for notify-send. For example, emotes contains :

devav2@devav2:/usr/share/icons/gnome/32x32$ ls emotes/
emote-love-symbolic.symbolic.png        face-raspberry-symbolic.symbolic.png
face-angel-symbolic.symbolic.png        face-sad-symbolic.symbolic.png
face-angry-symbolic.symbolic.png        face-shutmouth-symbolic.symbolic.png
face-confused-symbolic.symbolic.png     face-sick-symbolic.symbolic.png
face-cool-symbolic.symbolic.png         face-smile-big-symbolic.symbolic.png
face-crying-symbolic.symbolic.png       face-smile-symbolic.symbolic.png
face-devilish-symbolic.symbolic.png     face-smirk-symbolic.symbolic.png
face-embarrassed-symbolic.symbolic.png  face-surprise-symbolic.symbolic.png
face-glasses-symbolic.symbolic.png      face-tired-symbolic.symbolic.png
face-kiss-symbolic.symbolic.png         face-uncertain-symbolic.symbolic.png
face-laugh-symbolic.symbolic.png        face-wink-symbolic.symbolic.png
face-monkey-symbolic.symbolic.png       face-worried-symbolic.symbolic.png
face-plain-symbolic.symbolic.png        face-yawn-symbolic.symbolic.png

To use it in notify-send, use the prefix before -symbolic.symbolic.png:

notify-send -i face-glasses "I am wearing glasses"
notify-send -i multimedia-player "I am playing music"

You can also specify a direct path to an icon :

notify-send -i /usr/share/pixmaps/gnome-irc.png "Icon Test"

Answer 2

I don't know if they're found in a list format somewhere in the hard disk, but there's a list on the web here:

https://specifications.freedesktop.org/icon-naming-spec/latest/ar01s04.html