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Top Forums UNIX for Dummies Questions & Answers File access time does not change on some files Post 302505558 by vipulgupta0 on Thursday 17th of March 2011 08:57:55 AM
Old 03-17-2011
For example:
Code:
root@gupta:/home/gupta/Desktop/my_stuff/test# ls -lu xls.php 
-rw-r--r-- 1 gupta gupta 3947 2011-03-01 10:46 xls.php

root@gupta:/home/gupta/Desktop/my_stuff/test# cat xls.php

--- contents of the file ---

root@gupta:/home/gupta/Desktop/my_stuff/test# ls -lu xls.php 
-rw-r--r-- 1 gupta gupta 3947 2011-03-17 08:53 xls.php

so in the above example, the access time changes when we cat the file.

Now look at the following example -
Code:
root@gupta:/home/gupta/Desktop/my_stuff/tmp# ls -lu idxx.txt 
-rw-r--r-- 1 gupta gupta 1189 2011-03-16 14:35 idxx.txt

root@gupta:/home/gupta/Desktop/my_stuff/tmp# cat idxx.txt

--- contents of the file ----

root@gupta:/home/gupta/Desktop/my_stuff/tmp# ls -lu idxx.txt 
-rw-r--r-- 1 gupta gupta 1189 2011-03-16 14:35 idxx.txt

In this example, the access time does not change.

Thanks for any input.
V.

Moderator's Comments:
Mod Comment Please use [code] and [/code] tags when posting code, data or logs etc. to preserve formatting and enhance readability, thanks.

Last edited by zaxxon; 03-17-2011 at 10:30 AM.. Reason: code tags
 

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Spreadsheet::ParseExcel::Simple(3pm)			User Contributed Perl Documentation		      Spreadsheet::ParseExcel::Simple(3pm)

NAME
Spreadsheet::ParseExcel::Simple - A simple interface to Excel data SYNOPSIS
my $xls = Spreadsheet::ParseExcel::Simple->read('spreadsheet.xls'); foreach my $sheet ($xls->sheets) { while ($sheet->has_data) { my @data = $sheet->next_row; } } DESCRIPTION
This provides an abstraction to the Spreadsheet::ParseExcel module for simple reading of values. You simply loop over the sheets, and fetch rows to arrays. For anything more complex, you probably want to use Spreadsheet::ParseExcel directly. BOOK METHODS
read my $xls = Spreadsheet::ParseExcel::Simple->read('spreadsheet.xls'); This opens the spreadsheet specified for you. Returns undef if we cannot read the book. sheets @sheets = $xls->sheets; Each spreadsheet can contain one or more worksheets. This fetches them all back. You can then iterate over them, or jump straight to the one you wish to play with. book my $book = $xls->book; The Spreadsheet::ParseExcel object we are working with. You can use this if you need to manipulate it in ways that this interface doesn't allow. SHEET METHODS
These methods can be called on each sheet returned from $xls->sheets: has_data if ($sheet->has_data) { ... } This lets us know if there are more rows in this sheet that we haven't read yet. This allows us to differentiate between an empty row, and the end of the sheet. next_row my @data = $sheet->next_row; Fetch the next row of data back. sheet my $obj = $sheet->sheet; The underlying Spreadsheet::ParseExcel object for the worksheet. You can use this if you need to manipulate it in ways that this interface doesn't allow (e.g. asking it for the sheet's name). AUTHOR
Tony Bowden BUGS and QUERIES Please direct all correspondence regarding this module to: bug-Spreadsheet-ParseExcel-Simple@rt.cpan.org COPYRIGHT AND LICENSE
Copyright (C) 2001-2005 Tony Bowden. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. SEE ALSO
Spreadsheet::ParseExcel. perl v5.8.8 2008-03-12 Spreadsheet::ParseExcel::Simple(3pm)
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