there is file contains below list of 1000 sample messages. I need to extract very specific reference.Could you please provide the command, I have tried grep it did not work.

ExceptionData>2711231382 </ExceptionData>

Could you please help out

<?xml version="1.0" encoding="UTF-8" ?><ExceptionMessage><ExceptionMessageContext><ExceptionType>MATCHING</ExceptionType><ExceptionMessageFormat>XML</ExceptionMessageFormat><ExceptionMessageDetail><![CDATA[<matchingerror><eqFiTrade><salesInformation><salesmanID><salesmanIDType></salesmanIDType><salesmanIDValue>WIB </salesmanIDValue></salesmanID></salesInformation><bookingParty><entityID>840 </entityID><accountID><accountIDType>N</accountIDType><accountIDValue>83080201 </accountIDValue></accountID></bookingParty><investAgent><investAgentIDvalue></investAgentIDvalue><accountID><accountIDType>N</accountIDType><accountIDValue></accountIDValue></accountID></investAgent><counterParty><counterPartyType>S</counterPartyType><accountID><accountIDType>S</accountIDType><accountIDValue>DB INT AG </accountIDValue></accountID></counterParty><security><identifier><identifierType>0</identifierType><identifierValue>GB0005603997</identifierValue><identifierType>S</identifierType><identifierValue>LGEN.F</identifierValue></identifier><identifier><identifierType>QUICK</identifierType><identifierValue></identifierValue></identifier><securityCcy>GBP</securityCcy><securityCcy>GBP</securityCcy></security><transaction><tradeID><tradeIDType>ESPEAR </tradeIDType><tradeIDValue>2711231382 </tradeIDValue><tradeIDVersion>1</tradeIDVersion></tradeID><tradeDate>20110810</tradeDate><valueDate>20110815</valueDate><buySell>B</buySell><securityPrice><price>0.9938</price><isAvg>N</isAvg></securityPrice><securityNetPrice><price>0</price></securityNetPrice><quantity><quantityType> </quantityType><amount>1465</amount></quantity><source><tradeID><tradeIDType>GEMSLN</tradeIDType><tradeIDValue>ESPEAR-4335318873</tradeIDValue></tradeID></source><tradeLinkage><linkageType>BASKET</linkageType><linkID>LAUG10KJW</linkID></tradeLinkage><commission></commission><tax></tax><accruedInterest></accruedInterest><priceType></priceType></transaction><settlement><payCcy>GBP</payCcy><instructions><depotAccount></depotAccount><agentBicCode></agentBicCode><agentBicName></agentBicName><externalRefNo></externalRefNo><cptyPrtcpntID></cptyPrtcpntID><reasonCodes></reasonCodes><centerReference></centerReference></instructions></settlement><valuation><payCcyNetAmount>1455.92</payCcyNetAmount></valuation><claims><eSpearParentTradeRef></eSpearParentTradeRef><underlyingSecurity></underlyingSecurity><agentSourceID></agentSourceID></claims></eqFiTrade><matching><EspearReference>2711231382 </EspearReference><Exposure>0</Exposure><clientType>Contract Match Client</clientType><contractStatus>UnMatched</contractStatus><agentStatus>UnMatched</agentStatus><proposal>Yes</proposal><key>INTRASPEARTRADE2711231382 END</key><contactNumber></contactNumber><cassitNumber>100348</cassitNumber><Domicile>DE</Domicile><contractMatchRef></contractMatchRef></matching></matchingerror>]]></ExceptionMessageDetail></ExceptionMessageContext><Exception><ExceptionID>MM003221</ExceptionID><ExceptionData>2711231382 </ExceptionData><ExceptionAction>DELETE</ExceptionAction><ExceptionPriority>HIGH</ExceptionPriority></Exception></ExceptionMessage>

vaibhavs17,

You can do a MORE on the file, then grep it...


more filename | grep "ExceptionData>2711231382 </ExceptionData>"

when you do this, it will show you what you are looking for. You have to use the quotes so the string does not process the special characters in the text you are searching for.

1 members found this post helpful.

My dear friend I am looking for 1000 of messages

What do you mean when you say grep didn't work? Post the command you used to extract the line(s) you wanted. Then, someone may be able to help you.

Ok...then you should read the man page on grep, and look up some examples of regular expressions.

Based on your single example above, you're trying to match a 10 digit number, that has a space after it. So:
Will return JUST the exception data tags and data, one per line, into an output file.

1 members found this post helpful.

..... in this single file, or you are looking for this information (ExceptionData>2711231382 </ExceptionData>) in 1000's of files...

sorry for the misunderstanding...

Yeah, I'm not clear on it either, but the command above will work anyway. Instead of "cat <one file name>", you can do "cat *", and it will go through ALL the files in a directory, look for that pattern, and output it to a single output file.

cat is not needed, just put the file name after grep string.

Yes, if you want to do just one file, but the OP mentioned thousands, and may need the results into a different output file.

bash takes care of that for grep just as it does for cat, just use an * for the file name.