Shell Programming and Scripting

day1="Feb 2"
day2="Feb 3"
day3="Feb 4"

day1="Feb 3"
day2="Feb 4"
day3="Feb 5"

day1="Feb 4"
day2="Feb 5"
day3="Feb 6"

print_cleanup_exec=$cer_log/print_cleanup_output.log
exec 1> $print_cleanup_exec
day1="Feb 2"
day2="Feb 3"
day3="Feb 4"

echo "-------------------------------------------------------" > ${print_cleanup}
echo "Header to print cleanup file :   \n"  >> ${print_cleanup}
echo "         Date : `date`  \n" >> ${print_cleanup}
echo " " >> ${print_cleanup}
prior=`lpstat -o |grep -v bytes |wc -l`
cleaned=`lpstat -o |grep -v bytes |sort -nkb1 |grep -v "${day1}" |grep -v "${day2}" |grep -v "${day3}" |wc -l `
....... snipped .........

$ date +"%b %_d" -d"2 day ago"
Feb  5

root:root> uname -a
HP-UX B.11.31 U ia64 0123365846 unlimited-user license

root:> date +"%b %_d" -d "2 day ago"
date: bad format character - _

date=$(date +"%d %m %Y")
#date="8 2 2019"

echo $date | read tday x

past_days="3,4,5"
max_past_day="${past_days##*,}"

echo "$date" | awk '
{
   m=$2; y=$3;
   if ($1 <= mpd) {
      mm=m; yy=y;
      if (mm-1 < 1) { mm=12; yy=y-1; } else { mm--; }
      print "cal ", mm, yy
   }
   print "cal ", m, y
}
' mpd=$max_past_day | sh | awk '
length($1) > 3 {month=substr($1, 1, 3)}
$1+=0 == $1  {for (i=1; i<=NF; i++) {days[c++]=month FS $i; daysa[d++]=$i;}}
END {
   sc=split(past_days, pdays, ",");
   for (j=1; j<=sc; j++) ppdays[pdays[j]]=pdays[j];
   for (i=c-1; i>=0; i--) {
      if (daysa[i]==tday) ptr=1;
      if (ptr && (prtc++ in ppdays)) out[outc++]=days[i];
   }
   for (i=outc-1; i>=0; i--) print "day" (++k) "=\"" out[i] "\"";
}
' tday=$tday past_days="$past_days"

prior=$(lpstat -o |grep -v bytes |wc -l)

cleaned=$( lpstat -o | grep -ve bytes -ve "${day1}" -ve "${day2}" -ve "${day3}" | wc -l )