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Full Discussion: How to get the date yesterday in AIX sh
Operating Systems AIX How to get the date yesterday in AIX sh Post 302302712 by kah00na on Tuesday 31st of March 2009 05:34:18 PM
Old 03-31-2009
I got sick of trying to script yesterday's date into so many different formats that I finally wrote and stole portions of this script to do it for me. I just pass in any arguments I want and out comes yesterdays date. I named the script "yesterday" and put it in /usr/local/bin on all my boxes:

Code:
FORMAT=${1:-YYYYMMDD}

if [ "$FORMAT" = "-help" ] || [ "$FORMAT" = "-h" ]; then
        echo "Usage:    Arguments are optional and can be given in any order"
        echo "          yesterday  [YY|yy|YYYY|yyyy|MM|mm|MMM|mmm|DD|dd]"
        exit 0
fi

typeset -Z2 YESTERDAY
typeset -Z2 MONTH

YESTERDAY=$((`date +%d` -1))
MONTH=`date +%m`
YEAR=`date +%Y`
if [ "$YESTERDAY" -eq "0" ]; then
        MONTH=$((MONTH-1))
        if [ $MONTH -eq "0" ]; then
                MONTH=12
                YEAR=$((YEAR-1))
        fi
        set `cal $MONTH $YEAR`
        shift $(($# - 1))
        YESTERDAY=$1
fi

ABBR_MONTH=$(echo $MONTH | sed \
        -e "s/01/Jan/" \
        -e "s/02/Feb/" \
        -e "s/03/Mar/" \
        -e "s/04/Apr/" \
        -e "s/05/May/" \
        -e "s/06/Jun/" \
        -e "s/07/Jul/" \
        -e "s/08/Aug/" \
        -e "s/09/Sep/" \
        -e "s/10/Oct/" \
        -e "s/11/Nov/" \
        -e "s/12/Dec/")

## Print the result
echo "${FORMAT}" | sed \
        -e "s/[Mm][Mm][Mm]/${ABBR_MONTH}/" \
        -e "s/[Yy][Yy][Yy][Yy]/${YEAR}/" \
        -e "s/[Yy][Yy]/$(echo ${YEAR}|cut -c3-4)/" \
        -e "s/[Mm][Mm]/${MONTH}/" \
        -e "s/[Dd][Dd]/${YESTERDAY}/"

Here is some examples of it running:
Code:
hostname:/:$ date
Tue Mar 31 16:28:15 CDT 2009
hostname:/:$ yesterday yyyymmdd
20090330
hostname:/:$ yesterday yyyy/mm/dd
2009/03/30
hostname:/:$ yesterday MM/DD/YYYY
03/30/2009
hostname:/:$ yesterday MM-DD-YYYY
03-30-2009
hostname:/:$ yesterday "MM dd YYYY"
03 30 2009
hostname:/:$

This User Gave Thanks to kah00na For This Post:
EW1(SG_
 

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LEARN ABOUT DEBIAN

debian::l10n::spider

Debian::L10n::Spider(3pm)				User Contributed Perl Documentation				 Debian::L10n::Spider(3pm)

NAME

       dl10n-spider -- crawl translator mailing lists (and BTS) for status updates

SYNOPSIS

       dl10n-spider [options] lang+

DESCRIPTION

       This script parses the debian-l10n-<language> mailing list archives. It looks for emails which title follow a specific format indicating
       what the author intend to translate, or the current status of his work on this translation.

       Those informations are saved to a dl10n database which can then be used to build a l10n coordination page or any other useless statistics.

   get_header(HTML)
       get_header extract the email header from the html page. This header starts at <!--X-Head-of-Message--> and stops at
       <!--X-Head-of-Message-End-->. As it contains html tags, they are also removed.

       It gets a reference to an array of line (HTML) containing the html code of the page.

       It returns a reference to an array containing the email header lines.

   get_message(LANGUAGE, YEAR, MONTH, MESSAGE)
       get_message requests message to the archives of a l10n mailling.

       It gets the language string (LANGUAGE), year (YEAR), month (MONTH) and message number (MESSAGE) integers.

       It return a reference to an array containing the html lines or 'undef' if an error occured.

   get_indexpage
       retrieves all messages numbers and subjects from a page of messages sorted by date. It return a hash table with message number as keys and
       subject as values (this is really quicker than retrieving each message).

LICENSE

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.  # You should have received a
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       Suite 330, Boston, MA 02111-1307, USA.

COPYRIGHT (C)
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	2004 Nicolas Bertolissio
	2004 Martin Quinson

perl v5.14.2							    2011-03-30						 Debian::L10n::Spider(3pm)
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