Você acabou de obter esta saída porque atualmente não possui pacotes de snap instalados ... execute:
snap find
A saída mostra os pacotes atualmente disponíveis:
Name Version Summary
canonical-dragon 0.7.1 The gadget snap for the dragonboard
canonical-i386 3.1 The gadget snap for generic i386 systems
canonical-pc 3.1 AMD64 generic package
canonical-pc-linux 4.4.0-18+20160419.13-26 The ubuntu-core kernel snap
canonical-pi2 3.2 Raspberry Pi 2 support package
go-example-webserver 16.04-4 Minimal Golang webserver for snappy
hello-world 6.0 Hello world example
http 4.6692016 HTTPie in a snap
links 2.12-1 Web browser running in text mode
moon-buggy 1.0.51.9 Drive a car across the moon
nmap 7.12SVN-0.4 Nmap ("Network Mapper") is a free and open source utility for network discovery and security auditing
notes-dpm 0.0.8+snap1 Note-taking application, write down your thoughts
shout 0.53.0 A self hosted web IRC client
sshtron 1.0 multiplayer Tron via ssh
tor-middle-relay 0.2.7.6-6 Essential infrastructure node for Tor network
ubuntu-calculator-app 2.1+snap3 Ubuntu Calculator application for the Unity 7 desktop
ubuntu-clock-app 3.6+snap3 Ubuntu Clock application for the Unity 7 desktop
ubuntu-core 16.04+20160419.20-55 The ubuntu-core OS snap
xkcd-webserver 16.04-5 Show random XKCD compic via a build-in webserver
Para instalar um pacote de snap, execute:
sudo snap install <package-name>
Depois de instalar os pacotes, snap list
mostrará os pacotes instalados.
Para mais informações sobre todos os comandos snap disponíveis, execute: snap --help
.
Exemplo:
sudo snap install nmap
Resultado:
snap list
Name Version Developer
nmap 7.12SVN-0.4 joetalbott
ubuntu-core 16.04+20160419.20-55 canonical