The fc-pattern command is used to display information about a font matching a pattern. It is a useful tool for font configuration and customization.

Use case 1: Display default information about a font

Code:

fc-pattern --default 'DejaVu Serif'

Motivation: The motivation for using this example is to retrieve the default information for a specific font. This can be helpful when you want to know the default properties of a font and use them as a reference while configuring or customizing fonts in your system.

Explanation:

• fc-pattern: the command name.
• –default: an option to specify that the default information of a font is requested.
• ‘DejaVu Serif’: the font pattern to match.

Example Output:

Pattern has 8 elts (size 32)
	family: "DejaVu Serif"(s)
	slant: 0(i)(s)
	weight: 80(i)(s)
	width: 100(i)(s)
	foundry: "unknown"(s)
	file: "DejaVuSerif.ttf"(s)
	index: 0(i)(s)
	fc_charset: "\007\000"(s)

Use case 2: Display config information about a font

Code:

fc-pattern --config 'DejaVu Serif'

Motivation: The motivation for using this example is to view the config information of a specific font. This can be helpful when you want to check the font configuration settings and make adjustments to better suit your preferences or specific requirements.

Explanation:

• fc-pattern: the command name.
• –config: an option to specify that the configuration information of a font is requested.
• ‘DejaVu Serif’: the font pattern to match.

Example Output:

Pattern has 8 elts (size 32)
	family: "DejaVu Serif"(s)
	slant: 0(i)(s)
	weight: 80(i)(s)
	width: 100(i)(s)
	foundry: "unknown"(s)
	file: "DejaVuSerif.ttf"(s)
	index: 0(i)(s)
	fc_charset: "\007\000"(s)

Conclusion:

The fc-pattern command is a useful tool for retrieving information about fonts. By using the –default option, you can view the default properties of a font. Similarly, with the –config option, you can check the configuration details of a font. These features come in handy when configuring or customizing fonts in your system.