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Top Forums Shell Programming and Scripting Perl: Comparing to two files and displaying the differences Post 302564987 by durden_tyler on Saturday 15th of October 2011 11:33:16 PM
Old 10-16-2011
Quote:
Originally Posted by dont_be_hasty
...
I'm new to perl and i have to write a perl script that will compare to log/txt files and display the differences. Unfortunately I'm not allowed to use any complied binaries or applications like diff or comm.
...
Why not? Why reinvent the wheel in Perl?
diff and comm are shipped with almost every *nix system, they are fast, flexible, rich-featured, less buggy and they have been tested again and again over the years.

tyler_durden

Last edited by durden_tyler; 10-16-2011 at 12:41 AM..
 

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TIFFCMP(1)						      General Commands Manual							TIFFCMP(1)

NAME
tiffcmp - compare two TIFF files SYNOPSIS
tiffcmp [ options ] file1.tif file2.tif DESCRIPTION
Tiffcmp compares the tags and data in two files created according to the Tagged Image File Format, Revision 6.0. The schemes used for com- pressing data in each file are immaterial when data are compared-data are compared on a scanline-by-scanline basis after decompression. Most directory tags are checked; notable exceptions are: GrayResponseCurve, ColorResponseCurve, and ColorMap tags. Data will not be com- pared if any of the BitsPerSample, SamplesPerPixel, or ImageWidth values are not equal. By default, tiffcmp will terminate if it encoun- ters any difference. OPTIONS
-l List each byte of image data that differs between the files. -t Ignore any differences in directory tags. BUGS
Tags that are not recognized by the library are not compared; they may also generate spurious diagnostics. The image data of tiled files is not compared, since the TIFFReadScanline() function is used. A error will be reported for tiled files. The pixel and/or sample number reported in differences may be off in some exotic cases. SEE ALSO
pal2rgb(1), tiffinfo(1), tiffcp(1), tiffmedian(1), libtiff(3) September 26, 1994 TIFFCMP(1)
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