Staying Regular: Using Regular Expressions to Search Text
Unix administrators like to keep themselves "regular," at least according to an old programming joke. Don't worry; this section is not about dietary fiber but about a type of pattern matching known as regular expressions, or regex. For a long time, Unix power users have worked with commands or programs that are based on regular expressions, such as grep, perl, sed, and awk. Because this is such a powerful way of searching and manipulating Strings, Java 1.4 added the java.util.regex
package to the core API. Of course, Java is platform-independent, and these regular expressions ...
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