Sponsored Content
Full Discussion: String Comparision
Top Forums Shell Programming and Scripting String Comparision Post 302555955 by clx on Friday 16th of September 2011 07:51:36 AM
Old 09-16-2011
How big are the files?
Can't you just use grep

Code:
$ cat f3
" a        "
" a2       "
$ 
$ cat f4
" a        "
" a        "
" a2       "
" b2       "
" c2       "
$ 
$ grep -f f3 f4
" a        "
" a        "
" a2       "
$

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

while - comparision

Hi, Please find the attached scriplet and suggest me to fix the bug in this. ----------------------------------- noofdirs=`ls *.tar | wc -l` if ; then let i=1 while ( $i <= $noofdirs ) ; do echo $i mkdir $i file1=`ls *.tar | head -1` mv $file1 $i i =... (2 Replies)
Discussion started by: sharif
2 Replies

2. Shell Programming and Scripting

String comparision in shell scripting

Hi Guys, I am new to scripting I have written a code to compare strings,but I am getting some Exception Code snippet: MODE="D" if ]; then . $file1 fi Error: ./BatchJobs.sh: [[: execute permission denied I have given all Execute permissions to the script(chmod 755... (2 Replies)
Discussion started by: Anji
2 Replies

3. UNIX for Dummies Questions & Answers

problem in string comparision

Hi All, I've to compare the number of records present in a file against its trailer count. for ex: rec_cnt=$(awk 'END{print NR}' file.txt) trl_cnt=$(tail -1 file.txt| cut -c1-6) problem is trailer is appended with zero's and while comparing it is giving problem. i.e, rec_cnt=9 and... (1 Reply)
Discussion started by: ganapati
1 Replies

4. Shell Programming and Scripting

comparision of string in various files

i want to take position 19-24(only first line) from all files and need to compare any duplication is there or not. If duplication, then i have to print the file names. I have written to take the characters from 19-24 from all files. but how to compare ? ... (1 Reply)
Discussion started by: senthil_is
1 Replies

5. Shell Programming and Scripting

reg String comparision

Hi, I would like to compare the 25th position of the file with the character '(' and if it is not equal then it would generate a mail. I have used the below if condition, however it is always executing the code within if, even the comparison is expected to return false. if Please help me... (1 Reply)
Discussion started by: kdheepan
1 Replies

6. Shell Programming and Scripting

Date - String comparision

Hi, I am having difficulty to compare a string in a file against a date from a a table and print the latest date. Below are the values. String in File : 2009-12-02 00:37:51 Value Table : 2010-01-10-02.00.49.294758 I have to compare both the values ( Ignore the Microsecond in the table... (5 Replies)
Discussion started by: sam_78_nyc
5 Replies

7. Shell Programming and Scripting

String comparision not working

have written a simple shell script to do some automation work. Basically the script searches for all the files in the current path and if the file is a specified one, it does some action. Below are the relevant lines --- #!/bin/bash 1.for i in ls * 2.do 3.if 4.then .... //do something... (3 Replies)
Discussion started by: Dev_Sharma987
3 Replies

8. Shell Programming and Scripting

String comparision

I have a string like ab or abc of whatever length. But i want to know whether another string ( for example, abcfghijkl, OR a<space> bcfghijkl ab<space> cfghijkl OR a<space>bcfghijkl OR ab<space> c<space> fghijkl ) starts with ab or abc... space might existing on the longer string... If so, i... (1 Reply)
Discussion started by: nram_krishna@ya
1 Replies

9. Shell Programming and Scripting

awk: string followed by tab comparision

Hi all, Currently i am using if( $0~/ NOT / && $0~/ NULL /) { ................. } to check if the input record contains "NOT" and "NULL". But in some cases "NOT" and "NULL" are preceded and followed by tab. How do i find compare for these fields as well? (3 Replies)
Discussion started by: ysvsr1
3 Replies

10. Shell Programming and Scripting

Test command non case specific string comparision

Hi, I want to do caseless string comparision using test command for eg: Ind_f="y" test "$Ind_f" == "y|Y" i tried , ** , nothing worked. any thoughts on how to do case insensitive string comparison using test command without converting to any particular case using typeset or tr? (8 Replies)
Discussion started by: Kulasekar
8 Replies
EMPTY-PAGE(1)							 ExactImage Manual						     EMPTY-PAGE(1)

NAME
empty-page - empty page detector of the ExactImage toolkit SYNOPSIS
empty-page [option...] {-i | --input} input-file empty-page {-h | --help} DESCRIPTION
ExactImage is a fast C++ image processing library. Unlike many other library frameworks it allows operation in several color spaces and bit depths natively, resulting in low memory and computational requirements. empty-page counts dark pixels of a black and white image and decides with a threshold whether the page is most probably empty, and thus can be removed from the image processing stream. OPTIONS
-i file, --input file Read image from the specified file. -m n, --margin n Set width of border margin to skip. For speed reasons, the margin has to be a multiple of 8. The default is 16. -p x, --percentage x Set fraction of permissible dark pixels. The default is 0.05 (5%). -h, --help Display help text and exit. EXAMPLES
$ empty-page -i test.tif The image has 75461 dark pixels from a total of 1060992 (7.11231%). non-empty EXIT STATUS
The exit status is 0 if the image is mostly white, 1 otherwise. SEE ALSO
exactimage(7) AUTHORS
Jakub Wilk <jwilk@debian.org> Wrote this manual page for the Debian system. http://www.exactcode.de/site/open_source/exactimage/ This manual page incorporates texts found on the ExactImage homepage. COPYRIGHT
This manual page was written for the Debian system (and may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or (at your option) any later version published by the Free Software Foundation. On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-2. empty-page 09/09/2013 EMPTY-PAGE(1)
All times are GMT -4. The time now is 01:13 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy