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Full Discussion: Extract date from files based on file pattern
Top Forums Shell Programming and Scripting Extract date from files based on file pattern Post 302978062 by Akshay Hegde on Tuesday 26th of July 2016 12:39:41 AM
Old 07-26-2016
This may help you

Code:
[akshay@localhost tmp]$ cat f
file1_20160101.txt
file2_20160101_abc.txt
filexyz20160101.txt
file2_20160101_dabc.txt
filexyz20160101.txt
file2_20160101_xabc.txt
filexyz20160101d.txt

[akshay@localhost tmp]$ while read s ; do touch $s; done < f

[akshay@localhost tmp]$ ls file*.txt -1
file1_20160101.txt
file2_20160101_abc.txt
file2_20160101_dabc.txt
file2_20160101_xabc.txt
filexyz20160101d.txt
filexyz20160101.txt

[akshay@localhost tmp]$ cat pattern.lst 
file1_*.txt
file2_*_abc.txt
filexyz*.txt

[akshay@localhost tmp]$ cat test.sh 
#!/usr/bin/env bash

while read pattern; do
   ls $pattern -1 | perl -lne '/([0-9]{4}[0-9]{2}[0-9]{2})/ and print $_," => ",$1'      
done < pattern.lst

[akshay@localhost tmp]$ bash test.sh 
file1_20160101.txt => 20160101
file2_20160101_abc.txt => 20160101
filexyz20160101d.txt => 20160101
filexyz20160101.txt => 20160101

 

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LEARN ABOUT CENTOS

atr_analysis

ATR_ANALYSIS(1p)                                                   User Commands                                                  ATR_ANALYSIS(1p)

NAME

       ATR_analysis - analyse a smart card ATR

SYNOPSIS

       ATR_analysis [ATRstring]

DESCRIPTION

       ATR_analysis is used to parse the ATR (Answer To Reset) sent by a smart card.

       The command also tries to find the card model using an ATR database stored in a text file smartcard_list.txt.

       The smartcard_list.txt file is searched in ./, /usr/local/pcsc/ and /usr/share/pcsc/ directories.

       Exemple:
        $ ATR_analysis '3B A7 00 40 18 80 65 A2 08 01 01 52'
        ATR: 3B A7 00 40 18 80 65 A2 08 01 01 52
        + TS = 3B --> Direct Convention
        + T0 = A7, Y(1): 1010, K: 7 (historical bytes)
          TB(1) = 00 --> Programming Param P: 0, I: 0
          TD(1) = 40 --> Y(i+1) = 0100, Protocol T = 0
        -----
          TC(2) = 18 --> Work waiting time: 960 x 24 x (Fi/F)
        + Historical bytes: 80 65 A2 08 01 01 52

        Possibly identified card:
        3B A7 00 40 18 80 65 A2 08 01 01 52
               Gemplus GPK8000

BUGS

       Maybe many bugs since I am not a ISO 7816 expert.

FILES

       smartcard_list.txt

SEE ALSO

       pcscd(8), pcsc_scan(1)

AUTHOR

       Ludovic Rousseau <ludovic.rousseau@free.fr>

Version: 1.3                                                       October 2005                                                   ATR_ANALYSIS(1p)
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