$ program help
Program is a program that does wonders!
Commands can be grouped | classified as follows:
Metasyntactic variables: foo, bar, baz
Category: foo1, bar1
For more information on a command
program help <command>.
For more help [go here (URL of docs)].
$ snap help
The snap command lets you install, configure, refresh and remove snaps.
Snaps are packages that work across many different Linux distributions,
enabling secure delivery and operation of the latest apps and utilities.
Commands can be classified as follows:
Basics: find, info, install, list, remove ...more: refresh, revert, switch, disable, enable History: changes, tasks, abort, watch Daemons: services, start, stop, restart, logs Commands: alias, aliases, unalias, prefer
Configuration: get, set, unset, wait
Account: login, logout, whoami
Permissions: connections, interface, connect, disconnect
Snapshots: saved, save, check-snapshot, restore, forget
Other: version, warnings, okay, ack, known, model, create-cohort, recovery
Development: run, pack, try, download, prepare-image
For more information about a command, run 'snap help '.
For a short summary of all commands, run ‘snap help --all’.