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Full Discussion: Problem in extraction when space is a field delimiter
Top Forums Shell Programming and Scripting Problem in extraction when space is a field delimiter Post 302443564 by elbrand on Monday 9th of August 2010 09:23:14 AM
Old 08-09-2010
This script handles one of your files. You may change the rows to print out. (here: 2 and 5 -> RTP="2 5")
I assume that the number of rows is usually six and only row 5 can be empty. If not we need to enhance the case-structure.

You need to run the script with the filename as first parameter:

Code:
    ./script.sh file.txt

Code:
#! /bin/bash

RTP="2 5"

while read -a A ; do
    case ${#A[@]} in
        5) A[5]=${A[4]} ; A[4]="" ;;
        *) : ;;
    esac
    L=""
    for n in ${RTP} ; do
        L="${L} ${A[$((N=n-1))]}"
    done
    echo "${L}"
done < <(awk '/SPOT/,/EOF/ {print}' ${1})

 

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LEARN ABOUT DEBIAN

sessions

RTP 
sessions.(3)					     Library Functions Manual						  RTP sessions.(3)

NAME

       RTP sessions. -

   Classes
       class TRTPSessionBase< RTPDataChannel, RTCPChannel, ServiceQueue >
       class SingleThreadRTPSession< RTPDataChannel, RTCPChannel, ServiceQueue >
	   This template class adds the threading aspect to the RTPSessionBase template in one of the many possible ways.
       class RTPSessionBase
	   Generic RTP protocol stack for exchange of realtime data.

   Typedefs
       typedef SingleThreadRTPSession RTPSession
	   Uses two pairs of sockets for RTP data and RTCP transmission/reception.
       typedef RTPSession RTPSocket
	   Alias for RTPSession.
       typedef SingleThreadRTPSession
	   < SymmetricRTPChannel,
	   SymmetricRTPChannel > SymmetricRTPSession"
	   Uses one pair of sockets, (1) for RTP data and (2) for RTCP transmission/reception.

Detailed Description
Typedef Documentation
   RTPSession
       Uses two pairs of sockets for RTP data and RTCP transmission/reception. UDP/IPv4 RTP Session scheduled by one thread of execution.

       Examples:
	   audiorx.cpp, audiotx.cpp, ccrtptest.cpp, rtphello.cpp, rtplisten.cpp, and rtpsend.cpp.

   RTPSocket
       Alias for RTPSession.

   SymmetricRTPSession
       Uses one pair of sockets, (1) for RTP data and (2) for RTCP transmission/reception. Symmetric UDP/IPv4 RTP session scheduled by one thread
       of execution.

Author
       Generated automatically by Doxygen for ccRTP from the source code.

ccRTP								  Sat Jun 23 2012						  RTP sessions.(3)
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