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Top Forums Shell Programming and Scripting compare date and time inside data of two files Post 302526680 by ajiwww on Wednesday 1st of June 2011 07:00:53 AM
Old 06-01-2011
CONDITIONS
---------------
values from columns 2 to 5 of a raw of fileA is exactly the same as fileB
if the above condition met, then
6th & 7th columns (date & time) of each raw of fileA is higher than fileB
if both the above conditions met, put the entries of fileB which matches, on a new file fileC
if any of the above conditions are not meeting, then put those unmatching entries of fileA on new file fileD

Note :- each raw of fileA need to be compared with all the raws in fileB


Example :-
------------
take first line of fileA and check for any entries in fileB which matches from column 2 to 5. If matches, then go to next condition
from the matching entries, check that 6th & 7th column value of fileB is higher than fileA
if both above conditions met, save those matching entries on a new file fileD
if any of the above conditions not met, save those unmatching entries of fileA on fileD

hope this helps..
 

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grep-changelog(1)					      General Commands Manual						 grep-changelog(1)

NAME
grep-changelog - print ChangeLog entries matching criteria SYNOPSIS
grep-changelog [options] [CHANGELOG...] DESCRIPTION
grep-changelog searches the named CHANGELOGs (by default files matching the regular expressions ChangeLog and ChangeLog.[0-9]+) for entries matching the specified criteria. At least one option or file must be specified. This program is distributed with GNU Emacs. OPTIONS
The program accepts unambiguous abbreviations for option names. --author=AUTHOR Print entries whose author matches regular expression AUTHOR. --text=TEXT Print entries whose text matches regular expression TEXT. --exclude=TEXT Exclude entries matching regular expression TEXT. --from-date=YYYY-MM-DD Only consider entries made on or after the given date. ChangeLog date entries not in the "YYYY-MM-DD" format are never matched. --to-date=YYYY-MM-DD Only consider entries made on or before the given date. --rcs-log Print output in a format suitable for RCS log entries. This format removes author lines, leading spaces, and file names. --with-date In RCS log format, print short dates. --reverse Show matches in reverse order. --version Display version information. --help Display basic usage information. COPYING
Copyright (C) 2008-2013 Free Software Foundation, Inc. Permission is granted to make and distribute verbatim copies of this document provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this document under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this document into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Free Software Foundation. grep-changelog(1)
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