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Full Discussion: writing the timestamp to as a header in a file
Top Forums Shell Programming and Scripting writing the timestamp to as a header in a file Post 302576925 by agama on Sunday 27th of November 2011 02:45:38 PM
Old 11-27-2011
Depends a bit on a few things. If you have a command foo let's say, that writes data to standard out, and you are capturing the data and want it timestamped, then something like this (assuming you are using ksh or bash):

Code:
(date; foo) >output-file

This will write the date and then the output from foo to the named file. You can give any parameters to date and/or foo that are needed.

If your file already exists, and you want to add the current time (assuming it was created by a previous command so current time is nearly the creation date of the data), and the above won't work because maybe the command creates the file and doesn't write to standard ouput, then something like this might work:

Code:
(date; cat orig-file) >new-file && mv new-file orig-file

This will create a new file with the date, add the contents from the original file, and if that operation was successful, will move the new file 'on top' of the original file.
 

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LEARN ABOUT DEBIAN

netsds::util::datetime

NetSDS::Util::DateTime(3pm)				User Contributed Perl Documentation			       NetSDS::Util::DateTime(3pm)

NAME

       NetSDS::Util::DateTime - common date/time processing routines

SYNOPSIS

	       use NetSDS::Util::DateTime;

	       print "Current date: " . date_now();

DESCRIPTION

       This package provides set of routines for date and time processing.

EXPORTED FUNCTIONS

       date_now_array([TIME])
	   Returns array of date items for given date.	If source date is not set current date used.

       date_now([TIME])
	   Return [given] date as string.

	       2001-12-23 14:39:53

       date_now_iso8601([TIME])
	   Return date as ISO 8601 string.

	       20011223T14:39:53Z

	   <http://en.wikipedia.org/wiki/ISO_8601> http://www.w3.org/TR/NOTE-datetime <http://www.w3.org/TR/NOTE-datetime>

       date_strip(DATE)
	   Trim miliseconds from date.

       date_date(DATE)
	   Trim time part from date.

       date_time(DATE)
	   Trim date part from date.

       time_from_string($string)
	   Return parsed date/time structure.

       date_from_string($string)
	   Return date from string representation.

       date_inc([INCREMENT, [TIME]])
	   Return date incremented with given number of seconds.

       date_inc_string([INCREMENT, [TIME]])
	   Return string representation of date incremented with given number of seconds.

EXAMPLES

       None yet

BUGS

       Unknown yet

SEE ALSO

       Date::Parse, Date::Format

TODO

       Import stuff from Wono project

AUTHOR

       Valentyn Solomko <val@pere.org.ua>

       Michael Bochkaryov <misha@rattler.kiev.ua>

perl v5.12.4							    2011-08-27					       NetSDS::Util::DateTime(3pm)
All times are GMT -4. The time now is 08:56 AM.
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