Shell Programming and Scripting

#!/bin/bash

TODAY=`/bin/date +%d`
TOMORROW=`/bin/date +%d -d "1 day"`

# See if tomorrow's day is less than today's
if [ $TOMORROW -lt $TODAY ]; then
        exit 0
fi

exit 1

#!/bin/bash
day=$(date +%d)
month=$(date +%m)
year=$(date +%Y)
run_or_not=$( awk -v day=$day -v month=$month -v year=$year 'BEGIN {
            if(month%2 && day == 30){ print "run" }else {
            if(month == 2){ leap=(0 == year % 4 && 0 != year % 100 || 0 == year % 400)
            if(leap && day == 29 ){ print "run" } else if(!leap && day == 28){ print "run"}
            } else if(day == 31){ print "run" } } }'  )
if [ "$run_or_not" == "run" ]
then
  echo "Execute your script!"
fi