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Top Forums Shell Programming and Scripting awk command to compare a file with set of files in a directory using 'awk' Post 302648575 by guruprasadpr on Wednesday 30th of May 2012 06:07:36 AM
Old 05-30-2012
Hi

Hoping you want to print the matching first lines, and not the filename itself:

Code:
$ cat f1.txt
guru~abc~efg
ammi
abc

Code:
$ cat f2.txt
abc~guru~ammi
bcd
efg

Code:
$ cat f3.txt
guru~abc~ammi
bcd
efg


Code:
$ awk -F '~' 'NR==1 && NR==FNR{x=$1;next}FNR==1{if ($1==x)print;}' f1.txt f2.txt f3.txt
guru~abc~ammi

 

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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)
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