Shell Programming and Scripting

find . -mtime +7 -exec mv {} dest_folder \;

awk  'BEGIN { 
 ## you do the maths...this may not be correct. calculate how many secs in 7 days
 onehr=60
 onemin=60
 oneday = ( onehr * onemin ) * 24
 sevendays = oneday * 7  
}
 day=substr($0,3,2)
 month=substr($0,5,2)
 year=substr($0,7,2)
 hr=substr($0,9,2)
 min=substr($0,11,2)
 t="20"year" "month" "day" "hr" "min" "00
 d=mktime(t)
 now=systime()
 if ( ( now - d ) >= sevendays ) {
  print $0
 }
}' file

#!/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