The regular expression that matches both “color” and “colour” is colo?ur. In this expression, the ? denotes that the preceding character u is optional, meaning it may appear zero or one time. This allows the expression to match both the American spelling “color” and the British spelling “colour”.
References := Understanding regular expressions is fundamental in various computing tasks, including cybersecurity operations. The Cisco Cybersecurity Operations Fundamentals (CBROPS) material covers the use of regular expressions for searching through logs and data, which is a critical skill for a cybersecurity analyst.
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