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Top Forums UNIX for Dummies Questions & Answers Importance of \ [ ] + ? in grep Post 302353794 by thanhdat on Wednesday 16th of September 2009 08:46:35 AM
Old 09-16-2009
Did you test on your system, what did those commands return ?
In my test (with debian 5) it should be :
$cat test
1222 345345

$egrep -o "12[0-9]+" test

And this command should be translated to : find all numbers starting with 12

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gtkhtml-editor-test(1)						   User Commands					    gtkhtml-editor-test(1)

gtkhtml-editor-test - A simple html editor for libgtkhtml. SYNOPSIS
gtkhtml-editor-test DESCRIPTION
gtkhtml-editor-test is a light-weight html editor for testing libgtkhtml-editor(3). It contains all the features that libgtkhtml-editor provides. It can be used to create a message in plaintext or HTML format. These features are used by the evolution(1). application. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWevolution-libs | +-----------------------------+-----------------------------+ |Interface stability |Volatile | +-----------------------------+-----------------------------+ SEE ALSO
evolution(1), libgtkhtml-editor(3), attributes(5) SunOS 5.11 28 Jul 2008 gtkhtml-editor-test(1)

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