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Full Discussion: Date minus 1 day
Top Forums Shell Programming and Scripting Date minus 1 day Post 302922108 by cjcox on Wednesday 22nd of October 2014 12:21:16 PM
Old 10-22-2014
If GNU date, consider:

Code:
date  -d '2014-10-22 11:26:00 CDT - 1 day'

If old Unix date, you can manipulate UTC/GMT 0 withing 24 hours.... so you can do things like:

Code:
TZ=UTC24 date

The latter might not help... all depends on what you can or cannot do on your system.
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Date::Manip::Lang(3)					User Contributed Perl Documentation				      Date::Manip::Lang(3)

NAME
Date::Manip::Lang - date manipulation routines (language initialization) DESCRIPTION
This module is a series of routines, one per language, used to initialize the support for different languages in Date::Manip ADDING A LANGUAGE
Adding a language is easily done. If you want to add a language, refer to the list of words and phrases given below. Translate them into the desired language and email them to me. Note that Date::Manip does support international character sets, so if there are non-ASCII characters in the words, it's not a problem. Be sure to include an ASCII representation as well that can be used in cases where non-ASCII characters might cause problems. In many cases, alternate spellings are allowed, and there may be multiple words or phrases which fit, so please include all of them (with ASCII representations for any that include non-ASCII characters). Please translate ALL of the following. In some cases, a phrase is given in parentheses. It is not necessary to translate the phrase. They're there to show the word in the correct context. month names (January February ...) abbreviations (Jan Feb ...) day name (Monday Tuesday ... Sunday) abbreviation (Mon Tue ... Sun) short abbrev. (M T ... S) number suffix (1st 2nd ... 31st) spelled out (first second ... thirty-first now today tomorrow yesterday last (last day of the month) each (each Tuesday of the month) of (first day of the week) at (at 3:00) on (on Tuesday) next (next Tuesday) last (last Tuesday) exactly (in exactly 3 hours) approximately (in approximately 3 hours) business (in 4 business days) Some times of the day are named. At the very least, there is probably noon and midnight. Provide all named times, and the time of day. noon 12:00:00 midnight 00:00:00 The delta field names can be written or abbreviated in many differet ways. Provide all names and abbreviations for the seven fields. For example: years/year/yrs/yr/y months/month/mon weeks/week/wk/wks/w days/day/d hours/hour/hr/hrs minutes/minute/min/mn seconds/second/sec/s What words/phrases can be used to say that a time is in the future? E.g. IN 3 hours 3 hours LATER 3 hours IN THE FUTURE In the past? 3 hours AGO 3 hours PAST Does the language have an equivalent of the English AM/PM? If so, what are all possible values of each? Other than a comma or period, are there any common integer/decimal separators? For example: 1.25 can be expressed as 1.25 or 1,25 commonly. Are there any other ways? When expressing time the hours/minutes and minutes/seconds are typically separated by colons. Are there any other separators? If so, what combinations of the separators are used in real life? For example: 05h30:00. NOTE: there must be the same number of sephm and sepms values and the first sephm corresponds to the first sepms, etc. AUTHOR
Sullivan Beck (sbeck@cpan.org) You can always get the newest beta version of Date::Manip (which may fix problems in the current CPAN version... and may add others) from my home page: http://www.cise.ufl.edu/~sbeck/ perl v5.12.1 2010-01-12 Date::Manip::Lang(3)
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