Shell Programming and Scripting

date1=`date -d "20100705" '+%d\/%b\/%Y' | cut -c2-`
date2=`date -d "20100706" '+%d\/%b\/%Y' | cut -c2-` 

sort -y -T /dir/having/enough_free_space/ -k2 test | sed -n "/$date1:06:/,/$date2:09:/p"

$ cat text
05/Jul/2010:07
06/Jul/2010:08

$ cat try

#!/usr/bin/ksh

  awk -F "[:/]" '
  BEGIN{
    a["Jan"]="01";
    a["Feb"]="02";
    a["Mar"]="03";
    a["Apr"]="04";
    a["May"]="05";
    a["Jun"]="06";
    a["Jul"]="07";
    a["Aug"]="08";
    a["Sep"]="09";
    a["Oct"]="10";
    a["Nov"]="11";
    a["Dec"]="12";
    getline < "text"
    date=int($1 a[$2] $3 $4 "00")
    getline < "text"
    date1=int($1 a[$2] $3 $4 "00")
   }{
     x=int(substr($1,length($1)-1) a[$2] $3 $4 $5)
     if (x >=date && x<=date1)
       print;
  }' infile

$./try

b    05/Jul/2010:07:00:10
b    05/Jul/2010:07:00:10
c    05/Jul/2010:07:10:10
d    05/Jul/2010:08:00:10
e    05/Jul/2010:09:00:10
f    05/Jul/2010:10:00:10
h    05/Jul/2010:11:00:10
i    05/Jul/2010:12:00:10
j    05/Jul/2010:13:00:10
k    05/Jul/2010:14:00:10
l    05/Jul/2010:15:00:10
m    05/Jul/2010:16:00:10
n    05/Jul/2010:17:00:10
o    05/Jul/2010:18:00:10
p    05/Jul/2010:19:00:10
q    05/Jul/2010:20:00:10
a    05/Jul/2010:21:00:10
b    05/Jul/2010:22:00:10
v    05/Jul/2010:23:00:10
g    06/Jul/2010:01:00:10
k    06/Jul/2010:02:00:10
i    06/Jul/2010:03:00:10
j    06/Jul/2010:04:00:10
k    06/Jul/2010:05:00:10
l    06/Jul/2010:06:00:10
m    06/Jul/2010:07:00:10
n    06/Jul/2010:08:00:10

getdate()
{
  IFS="$IFS:/"
  set -- $*
  case $2 in
    Jan) mon=01;;
    Feb) mon=02;;
    Mar) mon=03;;
    Apr) mon=04;;
    May) mon=05;;
    Jun) mon=06;;
    Jul) mon=07;;
    Aug) mon=08;;
    Sep) mon=09;;
    Oct) mon=10;;
    Nov) mon=11;;
    Dec) mon=12;;
  esac
  echo $3$mon$1$4$5$6
}
var1=20100705
var2=20100706
startdate=${var1}070000
enddate=${var2}080000

while read line
do
  stamp=${line##*[[:space:]]}
  linedate=$(getdate "$stamp")
  if [ $startdate -le $linedate ] && [ $enddate -gt $linedate ]; then
    printf "%s\n" "$line"
  fi
done <infile >outfile