Shell Programming and Scripting

current_date=31
        echo " CURRENT DAY -> $current_date"

        if [ $current_date -le 7 ]
        then
                week=A
        else
                if [ $current_date -gt 7 ] && [ $current_date -le 14 ];
                then
                        week=B
                else
                        if [ $current_date -gt 14 ] && [ $current_date -le 21 ];
                        then
                                week=C
                        else
                                if [ $current_date -gt 21 ] && [ $current_date -le 28 ] ;
                                then
                                        week=D
                                else
                                        week=E
                                fi
                        fi
                fi
        fi
        echo "CURRENT WEEK --> $week"
        echo ""

ksh test_script.sh D

ls=$(cal | awk '$1+=0 {ls=$1} END {print ls}')
ts=$(date +"%d")

[[ $ls = $ts ]] && echo "today is the last sunday of the month"

ls=$(LC_ALL=C cal | awk '$1+=0 {ls=$1} END {print ls}')