virtual Str[] aliases()

Command name alises/shortcuts

override Str appName()

App name is "fanc {name}"

Int err(Str msg)

Print error message and return 1

static FancCmd? find(Str name)

Find a specific command or return null

Void info(Str msg)

Print info message

static FancCmd[] list()

List installed commands

virtual override Log log()

Log name is "fanc"

abstract Str name()

Command name

Str[] names()

Name and aliases

Void printLine(Str line := "")

Print a line to stdout

Bool promptConfirm(Str msg)

Prompt for a confirm yes/no

abstract override Int run()

Run the command. Return zero on success

abstract Str summary()

Single line summary of the command for help