Shell Programming and Scripting

$ cat loopr
#! /usr/bin/ksh
#
# get current month and year
date '+%Y %m' | read year month
month=${month#0}   # drop leading zero

#
# back up one month
((month=month-1))
if ((!month)) ; then
       month=12
       ((year=year-1))
fi
echo $year $month

#
# compute last day of month
leap=0
if ((!(year%100))); then
       ((!(year%400))) && leap=1
else
       ((!(year%4))) && leap=1
fi
#                 ja fe ma ap ma jn jl ag se oc no de
set -A mlength xx 31 28 31 30 31 30 31 31 30 31 30 31
((leap)) && mlength[2]=29

last=${mlength[month]}

#
# loop
typeset -Z2 fmonth fday
day=1
while ((day<=last)) ; do
       fmonth=$month
       fday=$day
       h=lic${year}${fmonth}${fday}\*405\*.txt
       echo $h
       ((day=day+1))
done
exit 0
$ ./loopr
2008 7
lic20080701*405*.txt
lic20080702*405*.txt
lic20080703*405*.txt
lic20080704*405*.txt
lic20080705*405*.txt
lic20080706*405*.txt
lic20080707*405*.txt
lic20080708*405*.txt
lic20080709*405*.txt
lic20080710*405*.txt
lic20080711*405*.txt
lic20080712*405*.txt
lic20080713*405*.txt
lic20080714*405*.txt
lic20080715*405*.txt
lic20080716*405*.txt
lic20080717*405*.txt
lic20080718*405*.txt
lic20080719*405*.txt
lic20080720*405*.txt
lic20080721*405*.txt
lic20080722*405*.txt
lic20080723*405*.txt
lic20080724*405*.txt
lic20080725*405*.txt
lic20080726*405*.txt
lic20080727*405*.txt
lic20080728*405*.txt
lic20080729*405*.txt
lic20080730*405*.txt
lic20080731*405*.txt
$