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Full Discussion: How to get the latest and new values from the file in perl?
Top Forums Shell Programming and Scripting How to get the latest and new values from the file in perl? Post 302444966 by durden_tyler on Friday 13th of August 2010 10:12:53 AM
Old 08-13-2010
Quote:
Originally Posted by vanitham
...
Now the recent contents of the file are:

Code:
StartTimeStamp,EndTimeStamp,Counter1,Counter2,Counter3,Counter4
Aug13 2010 02:49:21,Aug13 2010 02:54:21,9,8,0,0
Aug13 2010 02:59:32,Aug13 2010 03:00:00,0,0,0,0
Aug13 2010 03:00:00,Aug13 2010 03:04:32,9,8,0,0
Aug13 2010 03:07:55,Aug13 2010 03:08:55,0,0,0,0
Aug13 2010 04:07:55,Aug13 2010 04:08:55,1,0,0,0
Aug13 2010 04:10:55,Aug13 2010 04:13:55,2,0,0,0

I have to compare the value before and after run i.e just check the values in file before running and after some process those values get incremented.

I have to compare those values.

How can i do it perl?
...
Your question is not clear.

Let's assume that your file looked like this before the process run -

Code:
StartTimeStamp,EndTimeStamp,Counter1,Counter2,Counter3,Counter4
Aug13 2010 02:49:21,Aug13 2010 02:54:21,9,8,0,0
Aug13 2010 02:59:32,Aug13 2010 03:00:00,0,0,0,0
Aug13 2010 03:00:00,Aug13 2010 03:04:32,9,8,0,0
Aug13 2010 03:07:55,Aug13 2010 03:08:55,0,0,0,0

And it looks like this after the process run -

Code:
StartTimeStamp,EndTimeStamp,Counter1,Counter2,Counter3,Counter4
Aug13 2010 02:49:21,Aug13 2010 02:54:21,9,8,0,0
Aug13 2010 02:59:32,Aug13 2010 03:00:00,0,0,0,0
Aug13 2010 03:00:00,Aug13 2010 03:04:32,9,8,0,0
Aug13 2010 03:07:55,Aug13 2010 03:08:55,0,0,0,0
Aug13 2010 04:07:55,Aug13 2010 04:08:55,1,0,0,0
Aug13 2010 04:10:55,Aug13 2010 04:13:55,2,0,0,0

(1) There were 4 records before the process run. They are in red color.
(2) The process appended 2 new records to the file. They are in blue color.
(3) There are 6 records now, after the process run.

Quote:
I have to compare those values.
How can i do it perl?
What exactly do you want to compare ??
There are 4 + 2 = 6 records in the file. Each record has a bunch of fields.

Why not take the file shown above as your input and show us your expected output ? Please put it within [ code ] tags.

tyler_durden
 

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LEARN ABOUT DEBIAN

gchem3d

GCHEM3D(1)						       gnome-chemistry-utils							GCHEM3D(1)

NAME

       gchem3d - a small chemical viewer application

SYNOPSIS

       gchem3d [OPTION(S)...] [FILE...]

DESCRIPTION

       gchem3d is a small chemical viewer application, which can show several chemical file formats.

OPTIONS

       The following options are accepted:

       -b COLOR, --bgcolor=COLOR
	   Use the given color as background color.  COLOR can be one of "black" (default), "white", "#rrggbb" (don't forget to escape the "#"
	   character in the shell).

       -d MODEL, --display3d=MODEL
	   Choose how molecules are displayed.	MODEL can be one of "BallnStick" (default), "SpaceFill".

       -?, --help
	   Show application help options.

       --help-all, --help-*
	   Print all or just a group of help options. These options are not documented here. Instead see gtk-options(7) and gnome-options(7).

       -v, --version
	   Print gchem3d version information.

SEE ALSO

       gnome-options(7), gtk-options(7)

AUTHORS

       Jean Brefort <jean.brefort@normalesup.org>
	   Program author.

       Daniel Leidert <daniel.leidert@wgdd.de>
	   Manpage author.

COPYRIGHT

       Copyright (C) 2002-2007 Jean Brefort
       Copyright (C) 2004-2007 Daniel Leidert

       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or any
       later version published by the Free Software Foundation.

gcu 0.12				      $Date: 2009-03-19 10:53:47 +0100 (jeu. 19 mars 2009) $					GCHEM3D(1)
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