best method to compare 2 big files in unix

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Compare and merge two big CSV files

Hi all, i need help. I have two csv files with a huge amount of data. I need the first column of the first file, to be compared with the data of the second, to have at the end a file with the data not present in the second file. Example File1: (only one column) profile_id 57036226...

2. UNIX for Beginners Questions & Answers

Compare two big files for differences using Linux

Hello everybody Looking for help in comparing two files in Linux(files are big 800MB each). Example:- File1 has below data $ cat file1 5,6,3 2.1.4 1,1,1 8,9,1 File2 has below data $ cat file2 5,6,3 8,9,8 1,2,1 2,1,4

3. Shell Programming and Scripting

Compare two big files for differences using Linux

4. Shell Programming and Scripting

Compare two files in UNIX

Hi, I have two files File1 Contents: abc dcf sdc File2 Contents: dcf sdc erg Now my program should return the contents existing in File1 but not in File2. In this case output shoud be "abc" as abc is not available in File 2. It should not return "erg" by saying it is...

5. Shell Programming and Scripting

Compare two files in unix

Hi Gurus I need your kind help sorting the below query I have two text files File1.txt ID Name Address 101 Srinath BBB 102 Sidharth CCC File2.txt ID Name Address 102 Siddharth DDD 103 Suman EEE Now the requirement is if the second file has...

6. UNIX for Advanced & Expert Users

How to compare two files using UNIX?

I have two files which have primary key(s) for each row. I need to compare both the files and produce the output in the following format. Primary key(s),file1 value,file2 value. Both the input files will be comma separated files. I have accomplished this using perl, but it is...

7. UNIX for Dummies Questions & Answers

how can i unix compare two files??

how can i unix compare two files?? var1 = 6499 7328 6351 7583 7573 var2 = 6499 7328 6351 7583 7777 i did: diff $var1 $var2 and i got the output: 1c1 < 6499 7328 6351 7583 7573 --- > 6499 7328 6351 7583 7777 what can i do with it? and what does it tell me?? how can i knoe that...

8. UNIX for Dummies Questions & Answers

Unix Compare Files

Hi, I need to compare 2 files based on the first field in each file and output the differences to a new file. example File 1 and File 2 both have first field as Number ie: File 1 1252652355 1859553322 1778899562 File 2 1252652355 1859553322 So I would expect File 3 to...

9. UNIX for Advanced & Expert Users

UNIX; Compare two files

Hi Guys, Requirement: Want to compare two files, if the the content of both files is same then show "Good result" else Show "Bad Result" I am using the following logic if( cmp -s a b = 0 ) then echo "Good result" else echo "Bad result" exit 0 fi But this is...

10. Shell Programming and Scripting

how to compare big real numbers

Hi everyone, I need to compare 2 big Floating/Real numbers in a script. After the comparission it is showing worng values in my script. echo "Enter value1" read value1 echo "Enter value2" read value2 Result=`echo "if($value1 > $value2) 1" | bc` if ; then echo "$value1 is...

LEARN ABOUT DEBIAN

diffpdf

DIFFPDF(1)						      General Commands Manual							DIFFPDF(1)

NAME

       diffpdf - compare two PDF files textually or visually

SYNOPSIS

       diffpdf [file1] [file2]

DESCRIPTION

       This manual page very briefly documents the diffpdf command.  (Click the GUI's Help button or press F1 for more information.)

       DiffPDF is a GUI application used to compare two PDF files.
       By  default  the  comparison is of the words on each pair of pages, but comparing character by character is also supported (e.g., for logo-
       graphic languages). And there's also support for comparing the pages by appearance (for example, if a diagram is changed or if a  paragraph
       is  reformatted, or a font changed). It is also possible to compare particular pages or page ranges. For example, if there are two versions
       of a PDF file, one with pages 1-12 and the other with pages 1-13 because of an extra page having been added as page 4, they can be compared
       by  specifying  two page ranges, 1-12 for the first and 1-3, 5-13 for the second. This will make DiffPDF compare pages in the pairs (1, 1),
       (2, 2), (3, 3), (4, 5), (5, 6), and so on, to (12, 13).

       If the program is passed two PDF filenames on the command line it will start up and compare those files in Text mode (or in Appearance mode
       if the filenames are preceded by -a or --appearance).

SEE ALSO

       For a command line tool for comparing PDF files see http://www.qtrac.eu/comparepdf.html.

AUTHOR

       diffpdf was written by Mark Summerfield <mark@qtrac.eu>.

       This  manual  page was written by Mark Summerfield <mark@qtrac.eu> and David Paleino <dapal@debian.org>, for the Debian project (and may be
       used by others).

diffpdf v2.1.1							    2012-06-04								DIFFPDF(1)

UNIX for Advanced & Expert Users