appres
Display X application resource settings.
TLDR
Show resources for an application
$ appres [XTerm]
Show resources with class$ appres [XTerm] [xterm]
Show specific resource$ appres [Emacs] | grep [font]
SYNOPSIS
appres [class] [instance]
DESCRIPTION
appres displays X application resources. It queries the X Resource Manager database and shows resources that would be applied to a specified application based on its class and instance names.
This is useful for debugging X11 application appearance and behavior, understanding which resources are being applied.
PARAMETERS
class
Application class name (typically capitalized)instance
Application instance name
CAVEATS
Only applies to X11 applications using Xlib resources. Modern toolkit applications (GTK, Qt) may not use X resources. Output depends on resources defined in .Xresources or .Xdefaults.
HISTORY
appres is a standard X11 utility that has been part of the X Window System since the X11R4 release in 1989.