Introduction to the appres Command

The appres command is an X11 utility that allows users to view and query the resources set for an application. It can be used to view the resources set for an application, as well as to query the resources set for an application. This command is available on Linux, BSD, and macOS.

Basic Usage and Syntax

The basic syntax for the appres command is:

appres [options] application [resource]

The options available for the appres command are:

• -all: Show all resources.
• -display: Specify the display to query.
• -help: Show usage information.
• -version: Show version information.
• -verbose: Show verbose output.
• -visual: Show visual information.

Examples of Common Use Cases

The appres command can be used to view the resources set for an application, as well as to query the resources set for an application. For example, to view the resources set for the xterm application, use the following command:

appres xterm

To query the resources set for the xterm application, use the following command:

appres -q xterm

Advanced Options and Flags

The appres command has several advanced options and flags that can be used to modify its behavior. These include:

• -synchronous: Make all X requests synchronous.
• -background: Set the background color.
• -background_pixel: Set the background pixel.
• -border_pixel: Set the border pixel.
• -border_width: Set the border width.
• -font: Set the font.
• -geometry: Set the geometry.
• -iconic: Iconify the application.
• -name: Set the application name.
• -title: Set the window title.
• -xrm: Set a resource.

Examples in Real-World Scenarios

The appres command can be used in a variety of real-world scenarios. For example, to set the background color of the xterm application to red, use the following command:

appres -background red xterm

To set the window title of the xterm application to "My Xterm Window", use the following command:

appres -title "My Xterm Window" xterm

Troubleshooting Tips and Potential Errors

When using the appres command, it is important to remember that it will only work with X11 applications. If you try to use it with non-X11 applications, it will not work. Additionally, if you try to set a resource that is not supported by the application, it will not be set.