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- The character ` is formally known as the backquote, backtick, or grave accent. In the ASCII character set, it corresponds to decimal value 96.🔗
- In Unix and Linux shell scripting (e.g., Bash), the backtick is used for command substitution, where the shell executes the command enclosed by backticks and replaces the expression with the command's standard output.🔗
- In the Markdown markup language, the backtick is essential for defining inline code snippets (surrounding the text) and for creating multi-line fenced code blocks (using three backticks).🔗
- ECMAScript 2015 (ES6) introduced template literals (template strings) in JavaScript, which are delimited by backticks and allow for variable interpolation (via ${expression}) and multi-line string definitions.🔗
Why did early Unix developers choose the backtick specifically for command substitution, and how has this practice evolved with modern alternatives like $(command)?
What are the specific typographical differences between the backtick (`) and the opening single quote (‘) across different typefaces and font families?
How do configuration file formats (like TOML or YAML) treat the backtick character when defining literal strings or code snippets within their structures?
Backquote / Grave Accent
Source: Wikipedia
The backquote (`) is a typographical character used both as a diacritical mark (the grave accent) and as a crucial programming symbol. As a diacritic, it marks a falling tone or stresses a vowel. In computing, its most widespread uses include command substitution in Unix shells, template literals in JavaScript, and code formatting in Markdown.
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ASCII Code: 96
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Unicode Point: U+0060
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Primary Uses: Command Substitution, Template Literals, Code Delimiter
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