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Full Discussion: Delete a row from a file if one column containing a date is greater than the current system date
Top Forums UNIX for Dummies Questions & Answers Delete a row from a file if one column containing a date is greater than the current system date Post 302536575 by chumsky on Tuesday 5th of July 2011 10:54:17 PM
Old 07-05-2011
Delete a row from a file if one column containing a date is greater than the current system date
Hello gurus,

I am hoping someone can help me with the required code/script to make this work. I have the following file with records starting at line 4:
Code:
NETW~US60~000000000013220694~002~~IT~USD~2.24~20110201~99991231~01~01~20101104~
NETW~US60~000000000013220694~003~~IT~USD~2.23~20110201~99991231~01~01~20111104~
NETW~US60~000000000013234445~001~~IT~USD~0.33~20090107~99991231~01~01~~

Logic would be:

1. Start reading line @ Row 4.
2. Check the date of the last column.
3. If date > current date, delete line
3. If there is no date, retain line

So from the example above, the record in the middle should be deleted from the file, thus retaining the 1st and 3rd lines.

Much appreciated!
Chumsky
Last edited by Franklin52; 07-06-2011 at 04:18 AM.. Reason: Please use code tags for code and data samples, thank you
 

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LEARN ABOUT CENTOS

dm_date

DM_DATE(1)						User Contributed Perl Documentation						DM_DATE(1)

NAME

       dm_date - print out the system date and time

SYNOPSIS

       This performs the same operation as the unix 'date' command, but using the Date::Manip module.

	  dm_date [OPTION]... [+FORMAT]

DESCRIPTION

       This displays information about the current system time, or some other time. Options are:

       -h, --help
	   Print online help.

       -d STRING, --date=STRING
	   Display time described by STRING. STRING can be any string which can be parsed by Date::Manip.  Please refer to the Date::Manip::Date
	   documentation for details.

       -f DATEFILE, --file=DATEFILE
	   This reads each line in DATEFILE, and extracts a date from it and prints out the information.

	   Blank lines and lines starting with a pound (#) are ignored. Lines not containing a valid date are also ignored.

       -r FILE, --reference=FILE
	   Displays the last modification time of FILE.

       -R, --rfc-2822
	   Displayc the date and time in RFC 2822 format.

	   Example: Mon, 07 Aug 2006 12:34:56 -0600

       -u, --utc, --universal
	   Converts the date to UT (GMT) and prints out the information.

       Only one of -d, -f, or -r should be included. If more than one is included, the first one from the list (-d, -f, -r) is used and any other
       is ignored.

       The format string starts with a plus (+) and contains any of the format directives described in Date::Manip::Date.

KNOWN BUGS

       None known.

BUGS AND QUESTIONS

       Please refer to the Date::Manip::Problems documentation for information on submitting bug reports or questions to the author.

SEE ALSO

       Date::Manip::Date

LICENSE

       This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

       Sullivan Beck (sbeck@cpan.org)

perl v5.16.3							    2014-06-09								DM_DATE(1)
All times are GMT -4. The time now is 02:19 PM.
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