RegExplorer is a visual regular expression explorer, it allows for writing regular expressions and visually see the matches, thus making regular expression much easier to write and maintain. The idea of this program was hatched while creating some regular expressions in emacs, I was writing regexps for finding C++ classes/functions and found it ...
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A perfect RHCE Study Guide is the essential requirement while preparing for RHCE certification. This section presents the best and free online RHCE Study Guide. In this RHCE Study Guide each RHCE topic is explained in detail with practical examples from real life.
Networking With Bash; Parallel; Pattern matching and regular expressions; Behaviour when a glob does not match anything; Case insensitive matching; Check if a string matches a regular expression; Extended globbing; Get captured groups from a regex match against a string; Matching hidden files; Regex matching; The * glob; The ** glob; The ? glob ...
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Sep 02, 2013 · Grep is a command-line utility for Unix used for searching text documents. It can perform basic searches and advanced pattern matching using regular expressions . The grep utility is included with all major Unix distributions, including Linux and Mac OS X .
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Feb 19, 2017 · Today we will talk about a handy tool for string manipulation called sed or sed Linux command. We use sed to work with text files like log files, configuration files, and other text files. In this post, we are going to focus on the sed Linux command, which is used for text manipulation, which is an essential step in our bash scripting journey.
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The regular expression is matched against an input string by comparing each character in the regular expression to each character in the input string, one after another. Regular expressions are normally case-sensitive so the regular expression The would not match the string the. "The" => The fat cat sat on the mat. Test the regular expression. 2.