#!/bin/ksh

GetDate()
{
# Exemple: GetDate -1 '+%Y%m%d'

typeset -i nDays=$1; format=$2
eval $(echo $TZ | sed '
s!\([^-0-9]*\)\([-0-9]*\)\(.*\)!typeset -i localOffset=\2;zon1=\1;zon2=\3!')
TZ=$zon1$((localOffset-24*nDays))$zon2 date $format
}

liste=$(ls dd*.txt)

ndate=$(GetDate -7 '+%y%m%d')

for i in $liste
do
        # Get the file date in YYMMDD format

        ydate=$(echo $i | cut -c7-8)
        mdate=$(echo $i | cut -c5-6)
        ddate=$(echo $i | cut -c3-4)

        zdate=${ydate}${mdate}${ddate}

        if [ $zdate -lt $ndate ]
        then
                echo "$i: file to move"
        else
                echo "$i: do not move"
        fi
done