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Full Discussion: Urgent help required in deleting a line without opening a file usinga shell script
Top Forums Shell Programming and Scripting Urgent help required in deleting a line without opening a file usinga shell script Post 302080636 by vino on Thursday 20th of July 2006 02:58:26 AM
Old 07-20-2006
Quote:
Originally Posted by girish.karulkar
cat name.cpp | grep -v "test file" > name.cpp
That command will wipe out the complete file.

You should be doing
Code:
grep -v "test file" name.cpp > name.cpp.new
mv name.cpp.new name.cpp

 

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LEARN ABOUT DEBIAN

appdataunit

AppDataUnit(3)						     Library Functions Manual						    AppDataUnit(3)

NAME

       AppDataUnit -

       Interface (envelope) to data received over RTP packets.

SYNOPSIS

       #include <queuebase.h>

   Public Member Functions
       AppDataUnit (const IncomingRTPPkt &packet, const SyncSource &src)
       ~AppDataUnit ()
       AppDataUnit (const AppDataUnit &src)
       AppDataUnit & operator= (const AppDataUnit &source)
	   Assignment operator.
       PayloadType getType () const
       const uint8 *const getData () const
	   Get data as it is received in RTP packets (i.e.
       size_t getSize () const
       const SyncSource & getSource () const
       bool isMarked () const
	   Is this data unit marked?.
       uint16 getSeqNum () const
	   Get data unit sequence number.
       uint8 getContributorsCount () const
	   Get the number of contributing sources in the CSRC list.
       const uint32 * getContributorsID () const
	   Get the array of 32-bit CSRC identifiers.

Detailed Description
       Interface (envelope) to data received over RTP packets.

       A class of objects representing data transmitted over RTP packets. Tipically, this object will apply to received data. Data blocks received
       via RTP connections as well as its related objects (source, etc), are accessed through the methods of this class.

       Author:
	   Federico Montesino Pouzols fedemp@altern.org

       Examples:
	   audiorx.cpp, ccrtptest.cpp, rtpduphello.cpp, rtphello.cpp, and rtplisten.cpp.

Constructor &; Destructor Documentation
   AppDataUnit::AppDataUnit (const IncomingRTPPkt &packet, const SyncSource &src)
   AppDataUnit::~AppDataUnit () [inline]
   AppDataUnit::AppDataUnit (const AppDataUnit &src)
       Parameters:
	   src the AppDataUnit object being copied

Member Function Documentation
   uint8 AppDataUnit::getContributorsCount () const [inline]
       Get the number of contributing sources in the CSRC list.

   const uint32* AppDataUnit::getContributorsID () const [inline]
       Get the array of 32-bit CSRC identifiers. Returns:
	   NULL if (getContributorsCount() == 0)

   const uint8* const AppDataUnit::getData () const [inline]
       Get data as it is received in RTP packets (i.e. for multi-octet encodings, octets are in network order.

       Returns:
	   Raw pointer to data block.

       Examples:
	   audiorx.cpp, ccrtptest.cpp, rtpduphello.cpp, and rtphello.cpp.

   uint16 AppDataUnit::getSeqNum () const [inline]
       Get data unit sequence number.

   size_t AppDataUnit::getSize () const [inline]
       Returns:
	   length of data in octets

       Examples:
	   audiorx.cpp, and rtplisten.cpp.

   const SyncSource& AppDataUnit::getSource () const [inline]
       Returns:
	   Source that sent this data

       Examples:
	   rtplisten.cpp.

   PayloadType AppDataUnit::getType () const [inline]
       Returns:
	   type of this data

       Examples:
	   rtplisten.cpp.

   bool AppDataUnit::isMarked () const [inline]
       Is this data unit marked?. Returns:
	   true if marked.

   AppDataUnit& AppDataUnit::operator= (const AppDataUnit &source)
       Assignment operator. Parameters:
	   source the AppDataUnit object being assigned

       Returns:
	   the result of the assignment

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

ccRTP								  Sat Jun 23 2012						    AppDataUnit(3)
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