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        <description>Expresiones Regulares Ejercicios

Horas

1 Seleccionar horas separadas por : espacio y punto
12:45
12.45
12 45
12/45
12_45
12@45
2 - Seleccionar horas válidas
12:45
00:00
23:59
99:99
29:00
3 - Seleccionar accesos en la tarde (pm)


21/11/2001 21:03:31 user admin login
22/11/2001 10:45:29 user rodolfo login
21/11/2001 12:18:52 user admin logout
22/11/2001 17:59:02 user root logout
23/11/2001 03:09:21 user admin login
21/11/2001 18:04:31 user admin login
22/11/2001 11:40:00 user rodolfo login
22/1…</description>
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        <description>Herramientas para expresiones regulares

Instalables

	*  visual-regexp - Interactively debug regular expressions 
&lt;http://laurent.riesterer.free.fr/regexp/&gt;

Online

	*  &lt;http://regexpal.com&gt;
	*  &lt;http://gskinner.com/RegExr/&gt;
	*  &lt;http://regex101.com&gt;  (para lenguajes de programación)</description>
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        <title>metacaracteres</title>
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        <description>Metacaracteres

Representantes
 Metacaracter    Nombre        Función           .               Punto         Un caracter cualquiera       [ ... ]         Lista         Un caracter permitido        [^ ...]       Lista Negada  Lista caracteres prohibidos</description>
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