chezmoi

chezmoi is an open-source tool for managing dotfiles (configuration files such as shell, editor and terminal settings) across multiple, diverse machines in a secure way. Its documentation lives at chezmoi.io, and the project is released under the MIT license. What it does - Keeps a single source of truth for configuration files and applies it to each machine, so settings stay consistent across laptops, servers and workstations. - Designed for heterogeneous environments: the same dotfiles repository can target machines with different operating systems, hostnames, users or installed software. - Security is a stated focus, which matters because dotfiles often contain credentials, tokens and machine-specific secrets. Typical capabilities associated with this kind of tool - A source directory that stores the managed files, with a command-line interface to add, edit, diff and apply changes. - Templating so a single file can render differently per machine, for example based on hostname, OS or environment variables. - Integration with version control (commonly Git) so changes to dotfiles can be reviewed, committed and shared. - Support for secrets and encrypted values, and for running scripts or hooks during apply. - Cross-platform operation, covering Unix-like systems and Windows. Who it is for Developers, system administrators and power users who maintain personal or team configuration across several machines and want a reproducible, auditable way to do it. The repository also includes a developer guide for contributors, and the README credits a large community of contributors. Note: this overview is based on the repository description and README, which are brief; specific features, supported platforms and workflows should be confirmed against the official documentation at chezmoi.io.