% d2o(1)
% 2026-03-10

# NAME
d2o (heavy h2o) - an experimental web server inspired by h2o project

# SYNOPSIS
**d2o** \[*config*\]

# DESCRIPTION
d2o is a webserver, **the main feature** of which is its **unique ICF configuration format**, which uses inheritance and string substitution as the primary means of managing websites.

Instead of spawning endless blocks and drowning in `location/`, It just uses pipelines. The entire server, with all subdomains, TLS, and proxying, fits into 12 lines that read from top to bottom. If a folder exists in $WWW, it automatically becomes a site through named wildcards. It’s not magic, it’s just the absence of unnecessary noise in a system that doesn’t try to appear more complex than it is.

# OPTIONS
*config*
: The path to the configuration file in ICF format. If not specified, `/etc/d2obase' is used.

# FILES
*/etc/d2obase*
: The default configuration file.

# SEE ALSO
d2obase(5)