snap list

manpage

執行

$ man snap

可以找到一段說明

COMMANDS

...略...

   list
       List installed snaps

       The list command displays a summary of snaps installed in the current system.

help

執行

$ snap -h

可以找到一段說明

Usage:
 snap [OPTIONS] <command>

Help Options:
 -h, --help  Show this help message

Available commands:

...略...

 list        List installed snaps

執行

$ snap list -h

或是執行

$ snap list --help

則會顯示

Usage:
  snap [OPTIONS] list

The list command displays a summary of snaps installed in the current system.

Help Options:
  -h, --help      Show this help message

指令範例

執行

$ snap list

顯示

Name         Version               Developer
hello-world  6.0                   canonical
ubuntu-core  16.04+20160419.20-55  canonical