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Full Discussion: Escaping embedded variables
Top Forums Shell Programming and Scripting Escaping embedded variables Post 302275927 by vertigo23 on Monday 12th of January 2009 02:07:13 PM
Old 01-12-2009
Question Escaping embedded variables
I'm running into a problem with a differential backup script written in GNU Bash 3.0 - the following stripped down code demonstrates the problem quite nicely.

Code:
$ DATE="last tuesday"
$ date --date="$DATE"
Tue Jan  6 00:00:00 PST 2009

So far so good.

Code:
$ CMD="date --date=\"$DATE\""
$ echo $CMD
date --date="last tuesday"
$ $CMD
date: the argument `tuesday"' lacks a leading `+';
When using an option to specify date(s), any non-option
argument must be a format string beginning with `+'.
Try `date --help' for more information.

How can I wrap these variables up correctly? It seems like it's not parsing the quotes correctly, but from the contents of the CMD variable (see above), it looks fine. What gives?
 

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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 08:10 PM.
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