1/17/2024 0 Comments Grep regex any characterThe most basic form of regex involves matching a sequence of characters in a similar way as you can do with Ctrl-F in a text editor. These are the kind of questions you must have the answer to before you sit down to write your regex. There are also features like character classes which can help you simplify your regular expressions.īefore writing any regex, you'll need to learn about all the basic cases and edge cases for the pattern you are looking for.įor instance, if you want to match 'Hello World', do you want the line to start with 'Hello' or can it start with anything? Do you want exactly one space between 'Hello' and 'World' or there can be more? Can other characters come after 'World' or should the line end there? Do you care about case sensitivity? And so on. Besides using literal characters (like 'abc'), there are some meta characters (*,+,? and so on) which have special purposes.
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