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Begin CLI

GitHub CI status

Installing

Install the Begin CLI by opening your terminal and entering the following command:

  • Mac, Linux: curl -sS https://dl.begin.com/install.sh | sh
    • Then follow the printed instructions to add Begin to your $PATH.
  • Windows: iwr https://dl.begin.com/install.ps1 -useb | iex

By default Begin installs to ~/.begin/ (Mac, Linux) / $Home\.begin\ (Windows). You can specify a custom directory to install to by using the BEGIN_INSTALL environment variable:

  • Mac, Linux: BEGIN_INSTALL=/whatever/path/here curl -sS https://dl.begin.com/install.sh | sh
  • Windows: $env:BEGIN_INSTALL="c:\whatever\path\here"; iwr https://dl.begin.com/install.ps1 -useb | iex

Alternatively, you can install Begin with npm: npm i -g @begin/cli.

Running locally

Be sure to set the following environment variables:

export DEPLOY=main
export BEGIN_CLI_CLIENT_ID_STAGING=<your staging ID>
export BEGIN_CLI_CLIENT_ID_PRODUCTION=<your production ID>

Usage

Note for Windows users: begin is a reserved word in PowerShell, so in Windows Begin is b.exe. Any documented references to running begin should be interpreted as running b in Windows.

  • Run begin to see your list of available commands
  • Get help:
    • Providing no argument (or unknown arguments) will print help; help should never be hard to get!
    • Additionally, providing the argument help anywhere in your command will always display relevant help (like -h or --help flags); for example:
      • begin dev help is equivalent to begin help dev or begin dev -h
  • Disable colorized output with the --no-color flag, or with the following env vars: BEGIN_NO_COLOR, NO_COLOR, or by setting TERM to dumb
    • Output is automatically de-colorized in JSON mode (--json)

JSON output

Setting the --json flag sets the output mode to JSON, intended for use with modern JSON-based workflows using tools like jq.

As such, final JSON output is always sent to stdout, even in the event of an error. Additionally, all ANSI colorization is automatically stripped from JSON output.

JSON schema

Successful execution:

  • ok (boolean): always true
  • message (string): always be present, but may be empty ("")
  • Other properties: individual commands may provide their own properties; for example: begin version will output begin (executable path) and version (semver string) properties)

Unsuccessful execution

  • ok (boolean): always false
  • error (string): message of the error
  • stack (string): stack trace of the error; only present if --debug flag is set

CLI release channels

Begin has two release channels:

  • latest (default) - well-hardened production releases following semver
  • main - the newest stuff (on the main branch, hence the name), not yet released to production

To install main directly, run:

  • Mac, Linux: curl -s https://dl.begin.com/install.sh | sh -s main
  • Windows: $v="main"; iwr https://dl.begin.com/install.ps1 -useb | iex

If you already have Begin installed, to switch to main from latest run: begin update --use main.

Similarly, to switch back to latest from main, run: begin update --use latest.

Tidbits

Wherever possible, the Begin CLI adheres to the Command Line Interface Guidelines.

Begin is async/await / Promises-based. It is currently CommonJS, with plans to eventually refactor to ESM.

Begin is written in idiomatic JavaScript with a key exception: each command's specific require() statements are in local scope, not global. This is specifically and deliberately done to reduce the coldstart time and ensure every execution runs as fast as possible.