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Full Discussion: need to remove duplicates based on key in first column and pattern in last column
Top Forums Shell Programming and Scripting need to remove duplicates based on key in first column and pattern in last column Post 302448998 by script_op2a on Friday 27th of August 2010 07:03:17 PM
Old 08-27-2010
need to remove duplicates based on key in first column and pattern in last column
Given a file such as this I need to remove the duplicates.

Code:
00060011    PAUL BOWSTEIN          ad_waq3_921_20100826_010517.txt
00060011    PAUL BOWSTEIN          ad_waq3_921_20100827_010528.txt

0624-01    RUT CORPORATION    ad_sade3_10_20100827_010528.txt
0624-01    RUT CORPORATION    ad_sade3_10_20100826_010517.txt

00000010    JONES, PAUL        ad_sade3_933_20100826_010517.txt
00000010    JONES, PAUL        ad_sade3_933_20100827_010528.txt

  • The key is the first column.
  • The last column determines which record to keep, that is delete all other duplicates and only keep that one. The last column with the greatest date and time should be kept as shown in bold.
Last edited by Scott; 08-31-2010 at 01:43 PM.. Reason: Please use code tags
 

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LEARN ABOUT DEBIAN

xclip-copyfile

XCLIP-COPYFILE(1)					      General Commands Manual						 XCLIP-COPYFILE(1)

NAME

       xclip-copyfile, xclip-cutfile, xclip-pastefile - copy and move files via the X clipboard

SYNOPSIS

       xclip-copyfile [-p] FILES...

       xclip-cutfile [-p] FILES...

       xclip-pastefile

DESCRIPTION

       xclip-copyfile copies files into the X clipboard, recursing into directories.

       xclip-cutfile copies the files, but also deletes them afterwards.

       -p     preserve path formation

       xclip-pastefile pastes the files out of the clipboard

EXAMPLES

       Copying a file to a remote host

       [maggie.lkpg.cendio.se ~]$ echo "A file created on ${HOSTNAME}" > file1
       [maggie.lkpg.cendio.se ~]$ xclip-copyfile file1
       [sofie.homeip.net ~/doc]$ xclip-pastefile
       file1
       [sofie.homeip.net ~/doc]$ cat file1
       A file created on maggie.lkpg.cendio.se

       Copying an entire tree structure

       [sofie.homeip.net ~]$ xclip-copyfile doc
       [maggie.lkpg.cendio.se ~/tmp]$ xclip-pastefile
       doc/
       doc/letter-mom-april.txt
       doc/file1
       doc/letter-dad-march.txt

       Copying files with preserved path information

       [maggie.lkpg.cendio.se ~]$ xclip-copyfile -p /etc/sysconfig/grub
       tar: Removing leading `/' from member names
       [sofie.homeip.net ~/tmp]$ xclip-pastefile
       etc/sysconfig/grub
       [sofie.homeip.net ~/tmp]$ ls etc/sysconfig/grub
       etc/sysconfig/grub

       Moving files

       [sofie.homeip.net ~]$ ls letter-brother-may.txt
       letter-brother-may.txt
       [sofie.homeip.net ~]$ xclip-cutfile letter-brother-may.txt
       [sofie.homeip.net ~]$ ls letter-brother-may.txt
       ls: cannot access letter-brother-may.txt: No such file or directory
       [sofie.homeip.net ~]$ cd doc
       [sofie.homeip.net ~/doc]$ xclip-pastefile
       letter-brother-may.txt

AUTHORS

       This  manual  page  was written by Maximilian Gass <mxey@cloudconnected.org> for the Debian project. It may be used for everything else, of
       course.

																 XCLIP-COPYFILE(1)
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