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Full Discussion: How UNIX/AIX handles a file deep down, say it's being read while another one tries to rename it?
Top Forums UNIX for Advanced & Expert Users How UNIX/AIX handles a file deep down, say it's being read while another one tries to rename it? Post 302384409 by TheGunMan on Tuesday 5th of January 2010 08:19:01 AM
Old 01-05-2010
How UNIX/AIX handles a file deep down, say it's being read while another one tries to rename it?
Hi Thinkers,

On AIX 5.3, we have a monitor program that reads the log file and searching for a certain string pattern that we define(say "transactionException"), if it sees it then it will raise an alert by sending an email.

Because the log file XXX.log is rolling into XXX.log.0, XXX.log.1, XXX.log.n...etc when a certain condition(size, time/date) meets, now my question is, is that possible that when the application generates the string "transactionException" and then it got rolled/renamed into XXX.log.0 before the monitor program sees it ? The monitor program is configured to monitor XXX.log file only ?

I am not sure how the monitor program is coded so I'd like to ask this way, if you are developing such monitor tooling, what you'd think to avoid the senario that I described above? I believe this may be to do with how Unix handle file deep down at the very low level ...


Your knowledge on this is much appreciated.

Thanks a ton.

Thegunman
 

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LEARN ABOUT OSX

datetime::locale::gez_et

DateTime::Locale::gez_ET(3)				User Contributed Perl Documentation			       DateTime::Locale::gez_ET(3)

NAME

       DateTime::Locale::gez_ET

SYNOPSIS

	 use DateTime;

	 my $dt = DateTime->now( locale => 'gez_ET' );
	 print $dt->month_name();

DESCRIPTION

       This is the DateTime locale package for Geez Ethiopia.

DATA

       This locale inherits from the DateTime::Locale::gez locale.

       It contains the following data.

   Days
       Wide (format)

	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXXX
	 XXX

       Abbreviated (format)

	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX

       Narrow (format)

	 X
	 X
	 X
	 X
	 X
	 X
	 X

       Wide (stand-alone)

	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXXX
	 XXX

       Abbreviated (stand-alone)

	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX

       Narrow (stand-alone)

	 X
	 X
	 X
	 X
	 X
	 X
	 X

   Months
       Wide (format)

	 XXX
	 XXX
	 XXX
	 XXX
	 XXXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX

       Abbreviated (format)

	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX

       Narrow (format)

	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X

       Wide (stand-alone)

	 XXX
	 XXX
	 XXX
	 XXX
	 XXXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX

       Abbreviated (stand-alone)

	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX
	 XXX

       Narrow (stand-alone)

	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X
	 X

   Quarters
       Wide (format)

	 Q1
	 Q2
	 Q3
	 Q4

       Abbreviated (format)

	 Q1
	 Q2
	 Q3
	 Q4

       Narrow (format)

	 1
	 2
	 3
	 4

       Wide (stand-alone)

	 Q1
	 Q2
	 Q3
	 Q4

       Abbreviated (stand-alone)

	 Q1
	 Q2
	 Q3
	 Q4

       Narrow (stand-alone)

	 1
	 2
	 3
	 4

   Eras
       Wide

	 BCE
	 CE

       Abbreviated

	 X/X
	 X/X

       Narrow

	 X/X
	 X/X

   Date Formats
       Full

	  2008-02-05T18:30:30 = XXXX 05 XXX XXXX 2008 X/X
	  1995-12-22T09:05:02 = XXXX 22 XXX XXXX 1995 X/X
	 -0010-09-15T04:44:23 = XXXXX 15 XXX XXXX -10 X/X

       Long

	  2008-02-05T18:30:30 = 05 XXX 2008
	  1995-12-22T09:05:02 = 22 XXX 1995
	 -0010-09-15T04:44:23 = 15 XXX -10

       Medium

	  2008-02-05T18:30:30 = 05-XXX-2008
	  1995-12-22T09:05:02 = 22-XXX-1995
	 -0010-09-15T04:44:23 = 15-XXX--10

       Short

	  2008-02-05T18:30:30 = 05/02/08
	  1995-12-22T09:05:02 = 22/12/95
	 -0010-09-15T04:44:23 = 15/09/-10

       Default

	  2008-02-05T18:30:30 = 05-XXX-2008
	  1995-12-22T09:05:02 = 22-XXX-1995
	 -0010-09-15T04:44:23 = 15-XXX--10

   Time Formats
       Full

	  2008-02-05T18:30:30 = 6:30:30 XXX UTC
	  1995-12-22T09:05:02 = 9:05:02 XXX UTC
	 -0010-09-15T04:44:23 = 4:44:23 XXX UTC

       Long

	  2008-02-05T18:30:30 = 6:30:30 XXX UTC
	  1995-12-22T09:05:02 = 9:05:02 XXX UTC
	 -0010-09-15T04:44:23 = 4:44:23 XXX UTC

       Medium

	  2008-02-05T18:30:30 = 6:30:30 XXX
	  1995-12-22T09:05:02 = 9:05:02 XXX
	 -0010-09-15T04:44:23 = 4:44:23 XXX

       Short

	  2008-02-05T18:30:30 = 6:30 XXX
	  1995-12-22T09:05:02 = 9:05 XXX
	 -0010-09-15T04:44:23 = 4:44 XXX

       Default

	  2008-02-05T18:30:30 = 6:30:30 XXX
	  1995-12-22T09:05:02 = 9:05:02 XXX
	 -0010-09-15T04:44:23 = 4:44:23 XXX

   Datetime Formats
       Full

	  2008-02-05T18:30:30 = XXXX 05 XXX XXXX 2008 X/X 6:30:30 XXX UTC
	  1995-12-22T09:05:02 = XXXX 22 XXX XXXX 1995 X/X 9:05:02 XXX UTC
	 -0010-09-15T04:44:23 = XXXXX 15 XXX XXXX -10 X/X 4:44:23 XXX UTC

       Long

	  2008-02-05T18:30:30 = 05 XXX 2008 6:30:30 XXX UTC
	  1995-12-22T09:05:02 = 22 XXX 1995 9:05:02 XXX UTC
	 -0010-09-15T04:44:23 = 15 XXX -10 4:44:23 XXX UTC

       Medium

	  2008-02-05T18:30:30 = 05-XXX-2008 6:30:30 XXX
	  1995-12-22T09:05:02 = 22-XXX-1995 9:05:02 XXX
	 -0010-09-15T04:44:23 = 15-XXX--10 4:44:23 XXX

       Short

	  2008-02-05T18:30:30 = 05/02/08 6:30 XXX
	  1995-12-22T09:05:02 = 22/12/95 9:05 XXX
	 -0010-09-15T04:44:23 = 15/09/-10 4:44 XXX

       Default

	  2008-02-05T18:30:30 = 05-XXX-2008 6:30:30 XXX
	  1995-12-22T09:05:02 = 22-XXX-1995 9:05:02 XXX
	 -0010-09-15T04:44:23 = 15-XXX--10 4:44:23 XXX

   Available Formats
       d (d)

	  2008-02-05T18:30:30 = 5
	  1995-12-22T09:05:02 = 22
	 -0010-09-15T04:44:23 = 15

       EEEd (d EEE)

	  2008-02-05T18:30:30 = 5 XXX
	  1995-12-22T09:05:02 = 22 XXX
	 -0010-09-15T04:44:23 = 15 XXX

       Hm (H:mm)

	  2008-02-05T18:30:30 = 18:30
	  1995-12-22T09:05:02 = 9:05
	 -0010-09-15T04:44:23 = 4:44

       hm (h:mm a)

	  2008-02-05T18:30:30 = 6:30 XXX
	  1995-12-22T09:05:02 = 9:05 XXX
	 -0010-09-15T04:44:23 = 4:44 XXX

       Hms (H:mm:ss)

	  2008-02-05T18:30:30 = 18:30:30
	  1995-12-22T09:05:02 = 9:05:02
	 -0010-09-15T04:44:23 = 4:44:23

       hms (h:mm:ss a)

	  2008-02-05T18:30:30 = 6:30:30 XXX
	  1995-12-22T09:05:02 = 9:05:02 XXX
	 -0010-09-15T04:44:23 = 4:44:23 XXX

       M (L)

	  2008-02-05T18:30:30 = 2
	  1995-12-22T09:05:02 = 12
	 -0010-09-15T04:44:23 = 9

       Md (M-d)

	  2008-02-05T18:30:30 = 2-5
	  1995-12-22T09:05:02 = 12-22
	 -0010-09-15T04:44:23 = 9-15

       MEd (E, M-d)

	  2008-02-05T18:30:30 = XXX, 2-5
	  1995-12-22T09:05:02 = XXX, 12-22
	 -0010-09-15T04:44:23 = XXX, 9-15

       MMdd (dd/MM)

	  2008-02-05T18:30:30 = 05/02
	  1995-12-22T09:05:02 = 22/12
	 -0010-09-15T04:44:23 = 15/09

       MMM (LLL)

	  2008-02-05T18:30:30 = XXX
	  1995-12-22T09:05:02 = XXX
	 -0010-09-15T04:44:23 = XXX

       MMMd (MMM d)

	  2008-02-05T18:30:30 = XXX 5
	  1995-12-22T09:05:02 = XXX 22
	 -0010-09-15T04:44:23 = XXX 15

       MMMEd (E MMM d)

	  2008-02-05T18:30:30 = XXX XXX 5
	  1995-12-22T09:05:02 = XXX XXX 22
	 -0010-09-15T04:44:23 = XXX XXX 15

       MMMMd (MMMM d)

	  2008-02-05T18:30:30 = XXX 5
	  1995-12-22T09:05:02 = XXX 22
	 -0010-09-15T04:44:23 = XXX 15

       MMMMdd (dd MMMM)

	  2008-02-05T18:30:30 = 05 XXX
	  1995-12-22T09:05:02 = 22 XXX
	 -0010-09-15T04:44:23 = 15 XXX

       MMMMEd (E MMMM d)

	  2008-02-05T18:30:30 = XXX XXX 5
	  1995-12-22T09:05:02 = XXX XXX 22
	 -0010-09-15T04:44:23 = XXX XXX 15

       ms (mm:ss)

	  2008-02-05T18:30:30 = 30:30
	  1995-12-22T09:05:02 = 05:02
	 -0010-09-15T04:44:23 = 44:23

       y (y)

	  2008-02-05T18:30:30 = 2008
	  1995-12-22T09:05:02 = 1995
	 -0010-09-15T04:44:23 = -10

       yM (y-M)

	  2008-02-05T18:30:30 = 2008-2
	  1995-12-22T09:05:02 = 1995-12
	 -0010-09-15T04:44:23 = -10-9

       yMEd (EEE, y-M-d)

	  2008-02-05T18:30:30 = XXX, 2008-2-5
	  1995-12-22T09:05:02 = XXX, 1995-12-22
	 -0010-09-15T04:44:23 = XXX, -10-9-15

       yMMM (y MMM)

	  2008-02-05T18:30:30 = 2008 XXX
	  1995-12-22T09:05:02 = 1995 XXX
	 -0010-09-15T04:44:23 = -10 XXX

       yMMMEd (EEE, y MMM d)

	  2008-02-05T18:30:30 = XXX, 2008 XXX 5
	  1995-12-22T09:05:02 = XXX, 1995 XXX 22
	 -0010-09-15T04:44:23 = XXX, -10 XXX 15

       yMMMM (y MMMM)

	  2008-02-05T18:30:30 = 2008 XXX
	  1995-12-22T09:05:02 = 1995 XXX
	 -0010-09-15T04:44:23 = -10 XXX

       yQ (y Q)

	  2008-02-05T18:30:30 = 2008 1
	  1995-12-22T09:05:02 = 1995 4
	 -0010-09-15T04:44:23 = -10 3

       yQQQ (y QQQ)

	  2008-02-05T18:30:30 = 2008 Q1
	  1995-12-22T09:05:02 = 1995 Q4
	 -0010-09-15T04:44:23 = -10 Q3

       yyMM (MM/yy)

	  2008-02-05T18:30:30 = 02/08
	  1995-12-22T09:05:02 = 12/95
	 -0010-09-15T04:44:23 = 09/-10

       yyQ (Q yy)

	  2008-02-05T18:30:30 = 1 08
	  1995-12-22T09:05:02 = 4 95
	 -0010-09-15T04:44:23 = 3 -10

       yyyyMMMM (MMMM y)

	  2008-02-05T18:30:30 = XXX 2008
	  1995-12-22T09:05:02 = XXX 1995
	 -0010-09-15T04:44:23 = XXX -10

   Miscellaneous
       Prefers 24 hour time?

       No

       Local first day of the week

       XXXX

SUPPORT

       See DateTime::Locale.

AUTHOR

       Dave Rolsky <autarch@urth.org>

COPYRIGHT

       Copyright (c) 2008 David Rolsky. All rights reserved. This program is free software; you can redistribute it and/or modify it under the
       same terms as Perl itself.

       This module was generated from data provided by the CLDR project, see the LICENSE.cldr in this distribution for details on the CLDR data's
       license.

perl v5.16.2							    2013-08-25					       DateTime::Locale::gez_ET(3)
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