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Full Discussion: To extract date and time separately from the file name
Top Forums Shell Programming and Scripting To extract date and time separately from the file name Post 302427202 by IND123 on Friday 4th of June 2010 07:24:26 AM
Old 06-04-2010
To extract date and time separately from the file name
Hi.,

My current script extracts only if the date and time are in 3rd and 4th pos.


Code:
 
#!/bin/bash
echo "Enter the file name to extract the timestamp"
read fname
IFILE=$fname
F=$IFILE
IFS="_."  
f=($F)    
echo "Date ${f[2]} Time ${f[3]}"

How to generalize the script to extract the fields regardless of its position.

Currently for my i/p file of format: ot_abc_20100406_041025.txt, it is working properly. And also my timestamp will be last 2 fields before the file extension starts.

So regardless of i/p file I want the script to extract the last to fields. Request you to suggest the solution.

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 03:04 PM.
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