tree: 9f094ca1faf3fff31489ec61cbd3faeb0c287bfc [path history] [tgz]
  1. common/
  2. console/
  3. fidl/
  4. interpreter/
  5. josh/
  6. meta/
  7. parser/
  10. OWNERS

Fuchsia Shell


The goal of the Fuchsia Shell project is to build a shell experience for Fuchsia developers that is Fuchsia-first - that is, one that allows the user to interact with a system running Fuchsia in a way that feels native to Fuchsia, rather than being ported forward from some other system. The shell is designed to allow you to manipulate FIDL interfaces, namespaces, Zircon objects, and other core Fuchsia concepts.

Getting started

To get started with the shell, simply add "//src/developer/shell:cliff" to the packages you build. You can then invoke cliff from the dash command line. As the shell evolves, it will eventually replace dash, and you will not have to take the extra step of adding it to your build.

Shell Language

Variable declaration

You can declare a variable with var (meaning it is mutable), or const (meaning it is immutable). Variables are declared with an initial value:

var a = 1
const b = 2


Integers are arbitrary length two‘s complement integers, although our implementation currently limits users to 64-bit signed two’s complement. Integer literals can be sequences of numbers (e.g., 12345), or can be separated into groups of 3 by the _ character (e.g., 1_001 or 123_456).


Changes to the shell can be exercised via the following test components:

DirectoryTest Name

For example, this will test the parser:

fx test shell-parser-unittests