Sponsored Content
Top Forums Shell Programming and Scripting Grep matched records from huge file Post 302338854 by mjkreddy on Wednesday 29th of July 2009 05:44:49 AM
Old 07-29-2009
Hi Frank,

Can u please extend this query for any no of records in the .dat file which is having 0's from 11th to 20th position in a record(lenght unkown)and having 1 in between.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed, grep, awk, regex -- extracting a matched substring from a file/string

Ok, I'm stumped and can't seem to find relevant info. (I'm not even sure, I might have asked something similar before.): I'm trying to use shell scripting/UNIX commands to extract URLs from a fairly large web page, with a view to ultimately wrapping this in PHP with exec() and including the... (2 Replies)
Discussion started by: ropers
2 Replies

2. Shell Programming and Scripting

deleting multiple records from a huge file at one time

I have a very big file of 5gb size and there are about 50 million records in there. I have to delete the records based on recrord number that I know fromoutside with out opening the file. The record numbers are very random like 5000678, 7890005 etc. Can somebody let me know how i can... (5 Replies)
Discussion started by: dsravan
5 Replies

3. Shell Programming and Scripting

grep all records in a file and get a word count -perl

Hi, I have a file .. file.txt .. i need to get a total record count in the files into a $variable.. im using perl script thanks (4 Replies)
Discussion started by: meghana
4 Replies

4. UNIX for Dummies Questions & Answers

Parsing out records from one huge record

Hi, I have one huge record and know that each record in the file is 550 bytes long. How do I parse out individual records from the single huge record. Thanks, (4 Replies)
Discussion started by: bwrynz1
4 Replies

5. UNIX for Dummies Questions & Answers

Grep specific records from a file of records that are separated by an empty line

Hi everyone. I am a newbie to Linux stuff. I have this kind of problem which couldn't solve alone. I have a text file with records separated by empty lines like this: ID: 20 Name: X Age: 19 ID: 21 Name: Z ID: 22 Email: xxx@yahoo.com Name: Y Age: 19 I want to grep records that... (4 Replies)
Discussion started by: Atrisa
4 Replies

6. HP-UX

Performance issue with 'grep' command for huge file size

I have 2 files; one file (say, details.txt) contains the details of employees and another file (say, emp.txt) has some selected employee names. I am extracting employee details from details.txt by using emp.txt and the corresponding code is: while read line do emp_name=`echo $line` grep -e... (7 Replies)
Discussion started by: arb_1984
7 Replies

7. Shell Programming and Scripting

Grep records out of file

Hi, I have a file where there "Tab" seperated values are present.I need to identify duplicate entries based on column 1 & 6 only . For e.g : I tried using uniq ..but the output is only having one duplicate entry, instead of both the entries.I need both the above entries . uniq -f5... (2 Replies)
Discussion started by: appu2176
2 Replies

8. UNIX for Dummies Questions & Answers

What is the faster way to grep from huge file?

Hi All, I am new to this forum and this is my first post. My requirement is like to optimize the time taken to grep the file with 40000 lines. There are two files FILEA(40000 lines) FILEB(40000 lines). The requirement is like this, both the file will be in the format below... (11 Replies)
Discussion started by: mad man
11 Replies

9. Shell Programming and Scripting

Extract Matched Records from XML

Hi All, I have a requirement to extract para in XML file on the basis of another list file having specific parameters. I will extract these para from XML and import in one scheduler tool. file2 <FOLDER DATACENTER="ControlMserver" VERSION="800" PLATFORM="UNIX" FOLDER_NAME="SH_AP_INT_B01"... (3 Replies)
Discussion started by: looney
3 Replies

10. Shell Programming and Scripting

How to fetch matched records from files between two different directory?

awk 'NR==FNR{arr;next} $0 in arr' /tmp/Data_mismatch.sh /prd/HK/ACCTCARD_20160115.txt edit by bakunin: seems that one CODE-tag got lost somewhere. i corrected that, but please check your posts more carefully. Thank you. (5 Replies)
Discussion started by: suresh_target
5 Replies
SVK::Log::Filter::Grep(3)				User Contributed Perl Documentation				 SVK::Log::Filter::Grep(3)

SYNOPSIS
SVK::Log::Filter::Grep - search log messages for a given pattern DESCRIPTION
The Grep filter requires a single Perl pattern (regular expression) as its argument. The pattern is then applied to the svn:log property of each revision it receives. If the pattern matches, the revision is allowed to continue down the pipeline. If the pattern fails to match, the pipeline immediately skips to the next revision. The pattern is applied with the /i modifier (case insensitivity). If you want case-sensitivity or other modifications to the behavior of your pattern, you must use the "(?imsx-imsx)" extended pattern (see "perldoc perlre" for details). For example, to search for log messages that match exactly the characters "foo" you might use svk log --filter "grep (?-i)foo" However, to search for "foo" without regards for case, one might try svk log --filter "grep foo" The result of any capturing parentheses inside the pattern are not available. If demand dictates, the Grep filter could be modified to place the captured value somewhere in the stash for other filters to access. If the pattern contains a pipe character ('|'), it must be escaped by preceding it with a '' character. Otherwise, the portion of the pattern after the pipe character is interpreted as the name of a log filter. STASH
/PROPERTY MODIFICATIONS Grep leaves all properties and the stash intact. perl v5.10.0 2008-08-04 SVK::Log::Filter::Grep(3)
All times are GMT -4. The time now is 09:43 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy