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Full Discussion: Sed grep the first matched lines
Top Forums Shell Programming and Scripting Sed grep the first matched lines Post 302333407 by hezjing on Monday 13th of July 2009 03:04:21 AM
Old 07-13-2009
Sed grep the first matched lines
Hi

I have a myfile.txt contains the following:

Code:
CONTEXT {
  AAAAA
}
...
CONTEXT {
  BBBBB
}

I want to extract the lines in between CONTEXT { ... }, one by one.
Hence I wrote a command like the following,

Code:
sed -n '/^CONTENT/,/^}/ {
w a.txt
}' myfile.txt

The problem with this command is it will extract all the CONTEXT { ... } and write to a.txt.

How can I write only the first matched lines, e.g. CONTEXT {
AAAAA
} ???
 

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LEARN ABOUT DEBIAN

gappletviewer

GAPPLETVIEWER(1)                                                        GNU                                                       GAPPLETVIEWER(1)

NAME

       gappletviewer - Load and runs an applet

SYNOPSIS

       appletviewer [OPTION]... URL...

       appletviewer [OPTION]... -code CODE

       appletviewer [OPTION]... -plugin INPUT,OUTPUT

DESCRIPTION

       The appletviewer tool loads and runs an applet.

       Use the first form to test applets specified by tag.  The URL should resolve to an HTML document from which the appletviewer will extract
       applet tags.  The APPLET, EMBED and OBJECT tags are supported.  If a given document contains multiple applet tags, all the applets will be
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               appletviewer http://www.gnu.org/software/classpath/

       Use the second form to test an applet in development.  This form allows applet tag attributes to be supplied on the command line.  Only one
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               appletviewer -code Test.class -param datafile,data.txt

       gcjwebplugin uses the third form to communicate with the appletviewer through named pipes.

OPTIONS

       URL OPTIONS

       -debug
           This option is not yet implemented but is provided for compatibility.

       -encoding CHARSET
           Use this option to specify an alternate character encoding for the specified HTML page.

       APPLET TAG OPTIONS

       -code CODE
           Use the -code option to specify the value of the applet tag CODE attribute.

       -codebase CODEBASE
           Use the -codebase option to specify the value of the applet tag CODEBASE attribute.

       -archive ARCHIVE
           Use the -archive option to specify the value of the applet tag ARCHIVE attribute.

       -width WIDTH
           Use the -width option to specify the value of the applet tag WIDTH attribute.

       -height HEIGHT
           Use the -height option to specify the value of the applet tag HEIGHT attribute.

       -param NAME,VALUE
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       PLUGIN OPTION

       -plugin INPUT,OUTPUT
           gcjwebplugin uses the -plugin option to specify the named pipe the appletviewer should use for receiving commands (INPUT) and the one
           it should use for sending commands to gcjwebplugin (OUTPUT).

       DEBUGGING OPTION

       -verbose
           Use the -verbose option to have the appletviewer print debugging messages.

       STANDARD OPTIONS

       -help
           Use the -help option to have the appletviewer print a usage message, then exit.

       -version
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       -JOPTION
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BUGS

SEE ALSO

AUTHOR

0.98                                                                2010-07-05                                                    GAPPLETVIEWER(1)
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