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A tool that bootstraps your dotfiles
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Dotbot

Dotbot is a tool that bootstraps your dotfiles (it's a [Dot]files [bo]o[t]strapper, get it?). It does less than you think, because version control systems do more than you think.

Dotbot is designed to be lightweight and self-contained, with no external dependencies and no installation required. Dotbot is easy to set up, and it's easy to configure.

Dotbot is VCS-agnostic, and it doesn't make any attempt to manage your dotfiles. Existing version control systems like git are pretty awesome at doing this.

Dotbot can be a drop-in replacement for any other tool you were using to manage your dotfiles.

Dotfiles Organization

If you want an in-depth tutorial about organizing your dotfiles, see this blog post.

A great way to organize your dotfiles is having all of them in a single (isolated) git repository and symlinking files into place. You can add plugins and stuff using git submodules. This whole symlinking business can be a bit of work, but it's much better than just having your entire home directory under source control, and Dotbot can automate all of this for you and let you have a one-click install process, so you can have all the benefits of isolation without the annoyance of having to manually copy or link files.

Dotbot itself is entirely self contained and requires no installation (it's self-bootstrapping), so it's not necessary to install any software before you provision a new machine! All you have to do is download your dotfiles and then run ./install.

Template

If you are starting fresh with your dotfiles, you can fork the template repository. If you want, you can rename it afterwards (to something like just "dotfiles"). If you're looking for inspiration, the template repository contains links to dotfiles repositories that use Dotbot.

Setup

Dotbot is super easy to set up. This description is given in terms of git and git submodules, but the procedure is similar for other VCSs.

You can add Dotbot to your dotfiles by running the following command from within your git repository:

git submodule add https://github.com/anishathalye/dotbot

To have a one-click (one-command) install, you can place a bootstrap install shell script that calls Dotbot with the appropriate parameters. This script simply passes its arguments to Dotbot, so the script itself will not have to be updated once it's placed in the proper location (the Dotbot repository can be updated independently).

An bootstrap install shell script for git is given in tools/git-submodule/install. By default, the script assumes that the configuration is located in install.conf.yaml and Dotbot is located in dotbot. The script automatically makes sure that the correct version of Dotbot is checked out in the submodule.

Adapting the bootstrap script for different situations (such as using a different VCS) is fairly straightforward.

Configuration

Dotbot uses YAML-formatted (or JSON-formatted) configuration files to let you specify how to set up your dotfiles. Currently, Dotbot knows how to link files and folders, execute shell commands, and clean directories of broken symbolic links.

Ideally, bootstrap configurations should be idempotent. That is, the installer should be able to be run multiple times without causing any problems. This makes a lot of things easier to do (in particular, syncing updates between machines becomes really easy).

Dotbot configuration files are YAML (or JSON) arrays of tasks, where each task is a dictionary that contains a command name mapping to data for that command. Tasks are run in the order in which they are specified. Commands within a task do not have a defined ordering.

Link commands specify how files and directories should be symbolically linked. If desired, items can be specified to be forcibly linked, overwriting existing files if necessary.

Format

Link commands are specified as a dictionary mapping targets to source locations. Source locations are specified relative to the base directory (that is specified when running the installer). Source directory names should contain a trailing "/" character.

Link commands support an (optional) extended configuration. In this type of configuration, instead of specifying source locations directly, targets are mapped to extended configuration dictionaries. These dictionaries map "path" to the source path, specify "create" as true if the parent directory should be created if necessary, and specify "force" as true if the file or directory should be forcibly linked.

Example (YAML)
- link:
    ~/.config/terminator:
      create: true
      path: config/terminator/
    ~/.vim: vim/
    ~/.vimrc: vimrc
    ~/.zshrc:
      force: true
      path: zshrc
Example (JSON)
[{
    "link": {
        "~/.config/terminator": {
            "create": true,
            "path": "config/terminator/"
        },
        "~/.vim": "vim/",
        "~/.vimrc": "vimrc",
        "~/.zshrc": {
            "force": true,
            "path": "zshrc"
        }
    }
}]

Shell

Shell commands specify shell commands to be run. Shell commands are run in the base directory (that is specified when running the installer).

Format

Shell commands are specified as an array of commands, where each command is a two element array containing the actual shell command as the first element and a human-readable description as the second element.

Example (YAML)
- shell:
  - [mkdir -p ~/downloads, Creating downloads directory]
Example (JSON)
[{
    "shell": [
        ["mkdir -p ~/downloads", "Creating downloads directory"]
    ]
}]

Clean

Clean commands specify directories that should be checked for dead symbolic links. These dead links are removed automatically. Only dead links that point to the dotfiles directory are removed.

Format

Clean commands are specified as an array of directories to be cleaned.

Example (YAML)
- clean: ['~']
Example (JSON)
[{
    "clean": ["~"]
}]

Full Example

The configuration file format is pretty simple. Here's an example of a complete configuration. The conventional name for the configuration file is install.conf.yaml.

- clean: ['~']

- link:
    ~/.dotfiles: ''
    ~/.tmux.conf: tmux.conf
    ~/.vim: vim/
    ~/.vimrc: vimrc

- shell:
  - [git update-submodules, Installing/updating submodules]

The configuration file can also be written in JSON. Here is the JSON equivalent of the YAML configuration given above. The conventional name for this file is install.conf.json.

[
    {
        "clean": ["~"]
    },
    {
        "link": {
            "~/.dotfiles": "",
            "~/.tmux.conf": "tmux.conf",
            "~/.vim": "vim/",
            "~/.vimrc": "vimrc"
        }
    },
    {
        "shell": [
            ["git submodule update --init --recursive", "Installing submodules"]
        ]
    }
]

License

Copyright (c) 2014 Anish Athalye. Released under the MIT License. See LICENSE.md for details.