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Full Discussion: Extract a part of file name
Top Forums UNIX for Dummies Questions & Answers Extract a part of file name Post 302151770 by Mark Puddephat on Monday 17th of December 2007 08:54:53 AM
Old 12-17-2007
The solutions that have been suggested will work fine, so long as the length of the filename does not vary. If it does, then you need a different solution.

One possibility is this:

f=NLL_NAM_XXXXX.XXXXXXX_1_1.txt
f1=${f%%.*} # Extracts part of name before first period (NLL_NAM_XXXXX)
f2=${f#*.} # Extracts part of name after first period (XXXXXXX_1_1_.txt)
fileName=${f1##*_}.${f2%%_*}

The generation of fileName deserves a little explanation. What I have done is split the filename into the piece before the first period and the piece after. So the first piece (f1) contains the name up to XXXXX and the second piece (f2) contains the piece from XXXXXXX on. Next I strip the part of f1 up to and including the last underscore (${f1##*_}, leaving XXXXX, concatenate with a period (.) and what is left of f2 after removing everything from the first underscore on (${f2%%_*}. The resulting string (XXXXX.XXXXXXX) is assigned to the variable fileName.

This solution will work in place of the other solutions that rely on extracting a fixed length segment of srting starting a a fixed position. The difference is that the dependence on length is eliminated. The only assumption made about the string is that there is no period before the XXXXX.XXXXXXX in the original filename.
 

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LEARN ABOUT MOJAVE

datetime::locale::ar_lb

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

NAME

       DateTime::Locale::ar_LB

SYNOPSIS

	 use DateTime;

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

DESCRIPTION

       This is the DateTime locale package for Arabic Lebanon.

DATA

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

       It contains the following data.

   Days
       Wide (format)

	 XXXXXXX
	 XXXXXXXX
	 XXXXXXXX
	 XXXXXX
	 XXXXXX
	 XXXXX
	 XXXXX

       Abbreviated (format)

	 XXXXXXX
	 XXXXXXXX
	 XXXXXXXX
	 XXXXXX
	 XXXXXX
	 XXXXX
	 XXXXX

       Narrow (format)

	 XXXXXXX
	 XXXXXXXX
	 XXXXXXXX
	 XXXXXX
	 XXXXXX
	 XXXXX
	 XXXXX

       Wide (stand-alone)

	 XXXXXXX
	 XXXXXXXX
	 XXXXXXXX
	 XXXXXX
	 XXXXXX
	 XXXXX
	 XXXXX

       Abbreviated (stand-alone)

	 XXXXXXX
	 XXXXXXXX
	 XXXXXXXX
	 XXXXXX
	 XXXXXX
	 XXXXX
	 XXXXX

       Narrow (stand-alone)

	 X
	 X
	 X
	 X
	 X
	 X
	 X

   Months
       Wide (format)

	 XXXXX XXXXXX
	 XXXX
	 XXXX
	 XXXXX
	 XXXX
	 XXXXXX
	 XXXX
	 XX
	 XXXXX
	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXX

       Abbreviated (format)

	 XXXXX XXXXXX
	 XXXX
	 XXXX
	 XXXXX
	 XXXX
	 XXXXXX
	 XXXX
	 XX
	 XXXXX
	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXX

       Narrow (format)

	 XXXXX XXXXXX
	 XXXX
	 XXXX
	 XXXXX
	 XXXX
	 XXXXXX
	 XXXX
	 XX
	 XXXXX
	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXX

       Wide (stand-alone)

	 XXXXX XXXXXX
	 XXXX
	 XXXX
	 XXXXX
	 XXXX
	 XXXXXX
	 XXXX
	 XX
	 XXXXX
	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXX

       Abbreviated (stand-alone)

	 XXXXX XXXXXX
	 XXXX
	 XXXX
	 XXXXX
	 XXXX
	 XXXXXX
	 XXXX
	 XX
	 XXXXX
	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXX

       Narrow (stand-alone)

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

   Quarters
       Wide (format)

	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXXX

       Abbreviated (format)

	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXXX

       Narrow (format)

	 X
	 X
	 X
	 X

       Wide (stand-alone)

	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXXX

       Abbreviated (stand-alone)

	 XXXXX XXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXXX
	 XXXXX XXXXXX

       Narrow (stand-alone)

	 X
	 X
	 X
	 X

   Eras
       Wide

	 XXX XXXXXXX
	 XXXXXX

       Abbreviated

	 X.X
	 X

       Narrow

	 X.X
	 X

   Date Formats
       Full

	  2008-02-05T18:30:30 = XXXXXXXXX 5 XXXXX 2008
	  1995-12-22T09:05:02 = XXXXXXX 22 XXXXX XXXXXX 1995
	 -0010-09-15T04:44:23 = XXXXXX 15 XXXXXX -10

       Long

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

       Medium

	  2008-02-05T18:30:30 = 05X/02X/2008
	  1995-12-22T09:05:02 = 22X/12X/1995
	 -0010-09-15T04:44:23 = 15X/09X/-010

       Short

	  2008-02-05T18:30:30 = 5X/2X/2008
	  1995-12-22T09:05:02 = 22X/12X/1995
	 -0010-09-15T04:44:23 = 15X/9X/-010

       Default

	  2008-02-05T18:30:30 = 05X/02X/2008
	  1995-12-22T09:05:02 = 22X/12X/1995
	 -0010-09-15T04:44:23 = 15X/09X/-010

   Time Formats
       Full

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

       Long

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

       Medium

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

       Short

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

       Default

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

   Datetime Formats
       Full

	  2008-02-05T18:30:30 = XXXXXXXXX 5 XXXXX 2008 UTC 6:30:30 X
	  1995-12-22T09:05:02 = XXXXXXX 22 XXXXX XXXXXX 1995 UTC 9:05:02 X
	 -0010-09-15T04:44:23 = XXXXXX 15 XXXXXX -10 UTC 4:44:23 X

       Long

	  2008-02-05T18:30:30 = 5 XXXXX 2008 UTC 6:30:30 X
	  1995-12-22T09:05:02 = 22 XXXXX XXXXXX 1995 UTC 9:05:02 X
	 -0010-09-15T04:44:23 = 15 XXXXXX -10 UTC 4:44:23 X

       Medium

	  2008-02-05T18:30:30 = 05X/02X/2008 6:30:30 X
	  1995-12-22T09:05:02 = 22X/12X/1995 9:05:02 X
	 -0010-09-15T04:44:23 = 15X/09X/-010 4:44:23 X

       Short

	  2008-02-05T18:30:30 = 5X/2X/2008 6:30 X
	  1995-12-22T09:05:02 = 22X/12X/1995 9:05 X
	 -0010-09-15T04:44:23 = 15X/9X/-010 4:44 X

       Default

	  2008-02-05T18:30:30 = 05X/02X/2008 6:30:30 X
	  1995-12-22T09:05:02 = 22X/12X/1995 9:05:02 X
	 -0010-09-15T04:44:23 = 15X/09X/-010 4:44:23 X

   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 XXXXXXXX
	  1995-12-22T09:05:02 = 22 XXXXXX
	 -0010-09-15T04:44:23 = 15 XXXXX

       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 X
	  1995-12-22T09:05:02 = 9:05 X
	 -0010-09-15T04:44:23 = 4:44 X

       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 X
	  1995-12-22T09:05:02 = 9:05:02 X
	 -0010-09-15T04:44:23 = 4:44:23 X

       M (L)

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

       Md (d/XM)

	  2008-02-05T18:30:30 = 5/X2
	  1995-12-22T09:05:02 = 22/X12
	 -0010-09-15T04:44:23 = 15/X9

       MEd (EX d-M)

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

       MMdd (ddX/MM)

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

       MMM (LLL)

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

       MMMd (d MMM)

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

       MMMEd (E d MMM)

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

       MMMMd (d MMMM)

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

       MMMMEd (E d MMMM)

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

       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 (MX/yyyy)

	  2008-02-05T18:30:30 = 2X/2008
	  1995-12-22T09:05:02 = 12X/1995
	 -0010-09-15T04:44:23 = 9X/-010

       yMEd (EEEX d/XM/Xyyyy)

	  2008-02-05T18:30:30 = XXXXXXXXX 5/X2/X2008
	  1995-12-22T09:05:02 = XXXXXXX 22/X12/X1995
	 -0010-09-15T04:44:23 = XXXXXX 15/X9/X-010

       yMMM (MMM y)

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

       yMMMEd (EEEX d MMMM y)

	  2008-02-05T18:30:30 = XXXXXXXXX 5 XXXX 2008
	  1995-12-22T09:05:02 = XXXXXXX 22 XXXXX XXXXX 1995
	 -0010-09-15T04:44:23 = XXXXXX 15 XXXXX -10

       yMMMM (MMMM y)

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

       yQ (yyyy Q)

	  2008-02-05T18:30:30 = 2008 1
	  1995-12-22T09:05:02 = 1995 4
	 -0010-09-15T04:44:23 = -010 3

       yQQQ (y QQQ)

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

       yyQ (Q yy)

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

       yyyyMM (MMX/yyyy)

	  2008-02-05T18:30:30 = 02X/2008
	  1995-12-22T09:05:02 = 12X/1995
	 -0010-09-15T04:44:23 = 09X/-010

       yyyyMMMM (MMMMX y)

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

   Miscellaneous
       Prefers 24 hour time?

       No

       Local first day of the week

       XXXXXXX

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 v5.18.2							    2017-10-06						DateTime::Locale::ar_LB(3)
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