Sponsored Content
Operating Systems HP-UX Performance issue with 'grep' command for huge file size Post 302574538 by Corona688 on Thursday 17th of November 2011 12:43:38 PM
Old 11-17-2011
What's your region set to? GNU grep has to do a lot more work for UTF8 than C.

Code:
emp_name=`echo $line`

I'm trying to understand the purpose of this line... Flattening whitespace?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep matched records from huge file

111111111100000000001111111111 123232323200000010001114545454 232435424200000000001232131212 342354234301000000002323423443 232435424200000000001232131212 2390898994200000000001238908092 This is the record format. From 11th position to 20th position in a record there are 0's occuring,and... (6 Replies)
Discussion started by: mjkreddy
6 Replies

2. Shell Programming and Scripting

performance of shell script ( grep command)

Hi, I have to find out the run time for 40-45 different componets. These components writes in to a genreric log file in a single directory. eg. directory is LOG and the log file name format is generic_log_<process_id>_<date YY_MM_DD_HH_MM_SS>.log i am taking the run time using the time... (3 Replies)
Discussion started by: vikash_k
3 Replies

3. Shell Programming and Scripting

Implement in one line sed or awk having no delimiter and file size is huge

I have file which contains around 5000 lines. The lines are fixed legth but having no delimiter.Each line line contains nearly 3000 characters. I want to delete the lines a> if it starts with 1 and if 576th postion is a digit i,e 0-9 or b> if it starts with 0 or 9(i,e header and footer) ... (4 Replies)
Discussion started by: millan
4 Replies

4. Shell Programming and Scripting

Severe performance issue while 'grep'ing on large volume of data

Background ------------- The Unix flavor can be any amongst Solaris, AIX, HP-UX and Linux. I have below 2 flat files. File-1 ------ Contains 50,000 rows with 2 fields in each row, separated by pipe. Row structure is like Object_Id|Object_Name, as following: 111|XXX 222|YYY 333|ZZZ ... (6 Replies)
Discussion started by: Souvik
6 Replies

5. Shell Programming and Scripting

FTP a huge Size file

Dear All, Good Evening!! I have a requirement to ftp a 220GB backup file to a remote backup server. I wrote a script for this purpose. But it takes more than 8 hours to transfer this file. Is there any other method to do it in less time??? Thanks in Advance!!! ---------- Post updated... (5 Replies)
Discussion started by: Naga06
5 Replies

6. Shell Programming and Scripting

Optimised way for search & replace a value on one line in a very huge file (File Size is 24 GB).

Hi Experts, I had to edit (a particular value) in header line of a very huge file so for that i wanted to search & replace a particular value on a file which was of 24 GB in Size. I managed to do it but it took long time to complete. Can anyone please tell me how can we do it in a optimised... (7 Replies)
Discussion started by: manishkomar007
7 Replies

7. Shell Programming and Scripting

Performance issue while using find command

Hi, I have created a shell script for Server Log Automation Process. I have used find xargs grep command to search the string. for Example, find -name | xargs grep "816995225" > test.txt . Here my problem is, We have lot of records and we want to grep the string... (4 Replies)
Discussion started by: nanthagopal
4 Replies

8. UNIX for Advanced & Expert Users

Performance problem with removing duplicates in a huge file (50+ GB)

I'm trying to remove duplicate data from an input file with unsorted data which is of size >50GB and write the unique records to a new file. I'm trying and already tried out a variety of options posted in similar threads/forums. But no luck so far.. Any suggestions please ? Thanks !! (9 Replies)
Discussion started by: Kannan K
9 Replies

9. 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

10. Shell Programming and Scripting

Performance Issue for a file search command

Hi All, This query is regarding performance improvement of a command. I have a list of IDs in a file (say file1 with single ID column) and file2 has the data rows. I need to get the IDs from file1 and search in file2, matching rows from file2 should be written to a file3. For this... (4 Replies)
Discussion started by: Tanu
4 Replies
MDOM::Token::Comment(3pm)				User Contributed Perl Documentation				 MDOM::Token::Comment(3pm)

NAME
MDOM::Token::Comment - A comment in Makefile source code INHERITANCE
MDOM::Token::Comment isa MDOM::Token isa MDOM::Element SYNOPSIS
# This is a MDOM::Token::Comment foo: bar # So is this one echo 'hello' DESCRIPTION
In MDOM, comments are represented by "MDOM::Token::Comment" objects. These come in two flavours, line comment and inline comments. A "line comment" is a comment that stands on its own line. These comments hold their own newline and whitespace (both leading and trailing) as part of the one "MDOM::Token::Comment" object. An inline comment is a comment that appears after some code, and continues to the end of the line. This does not include whitespace, and the terminating newlines is considered a separate MDOM::Token::Whitespace token. This is largely a convenience, simplifying a lot of normal code relating to the common things people do with comments. Most commonly, it means when you "prune" or "delete" a comment, a line comment disappears taking the entire line with it, and an inline comment is removed from the inside of the line, allowing the newline to drop back onto the end of the code, as you would expect. It also means you can move comments around in blocks much more easily. For now, this is a suitably handy way to do things. However, I do reserve the right to change my mind on this one if it gets dangerously anachronistic somewhere down the line. METHODS
Only very limited methods are available, beyond those provided by our parent MDOM::Token and MDOM::Element classes. line The "line" accessor returns true if the "MDOM::Token::Comment" is a line comment, or false if it is an inline comment. SUPPORT
See the support section in the main module. AUTHOR
Adam Kennedy <adamk@cpan.org> COPYRIGHT
Copyright 2001 - 2006 Adam Kennedy. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. perl v5.12.4 2011-08-28 MDOM::Token::Comment(3pm)
All times are GMT -4. The time now is 10:12 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy