Install xrdb with Homebrew, apk, dnf, MacPorts, Nix, zypper

Project links

• Homepage
• Upstream docs
• Package manager page

Commands and aliases

• xrdb

Project history

The xrdb manual carries Digital Equipment Corporation and Open Group copyright dates from the 1990s and identifies Bob Scheifler and Phil Karlton as authors, rewritten from Jim Gettys's original. That lineage places xrdb in the classic MIT X / X11 tooling family, before the program was maintained as part of the modular X.Org application set.

The tool's design follows the X resource system: resources can be stored in RESOURCE_MANAGER on screen 0 and SCREEN_RESOURCES on individual screens. The X(7) manual describes xrdb as the program used by startup systems such as xdm and xinit to put global and per-screen resources into those properties.

Adoption history

xrdb became a normal part of X session startup because many X Toolkit and Xlib-era applications read resources from the server. It is a quiet dependency of the .Xresources/.Xdefaults culture: users could keep one resource file, merge it at login, and have X clients pick up consistent defaults across hosts and screens.

Its adoption persisted through packaging because the resource database remains relevant for traditional X clients, terminal emulators, lightweight window-manager sessions, remote X workflows, and compatibility setups even as many desktop applications moved to toolkit-specific configuration systems.

How it is used

Typical usage is `xrdb -merge ~/.Xresources` from an X startup file, followed by `xrdb -query` to inspect the server-side database. Users also use `-load`, `-override`, `-remove`, and `-edit` when replacing or round-tripping resource settings.

For package users, xrdb is most visible when installing or configuring xterm, bitmap-era X applications, old app-defaults packages, or minimalist desktop sessions where the user wants font, color, cursor, and widget defaults controlled by X resources.

Why package nerds care

xrdb is a classic example of a tiny package with outsized historical surface area: it is not a daemon or library, but it is the bridge between a user's resource files and the X server state that clients consult.

It matters in package catalogs because it explains why X11 setups still ship separate utilities for session glue. Without xrdb, many old-but-still-packaged X applications lose the shared configuration path their manuals assume.

Timeline

• 1991: xrdb manual copyright includes Digital Equipment Corporation, reflecting early X11 resource-database tooling.
• 1994-1998: Open Group copyright updates appear in the manual source.
• 2001: X.Org/XFree86 manual-source revision history records xrdb in the X11 utility tree.
• 2000s: xrdb continues as a modular X.Org application package used by display-manager and xinit-style startup flows.
• 2025: The upstream manpage remains maintained in the X.Org xrdb repository.

Related projects

• Xlib Resource Manager and X Toolkit Intrinsics are the resource systems xrdb feeds.
• xinit, xdm, and display managers commonly invoke xrdb during X session startup.
• xterm and other X Toolkit clients are typical consumers of RESOURCE_MANAGER settings.
• appres and listres are companion tools for inspecting application resources.

Sources

• https://gitlab.freedesktop.org/xorg/app/xrdb/-/raw/master/man/xrdb.man
• https://www.x.org/releases/X11R7.5/doc/man/man1/xrdb.1.html
• https://xorg.freedesktop.org/archive/X11R7.5/doc/man/man7/X.7.html