Shell Programming and Scripting

#!/bin/ksh
        while :
        do
        cur_date=`date |cut -d"," -f 1`
		cur_time=`date +"%H%M"
        if [ "$cur_date" != "Saturday" ]||[ "$cur_date" != "Sunday" ]; then
                if [ ! -f $FIRST_FILE ] && [ $cur_time -ge 2200 ]; then
                                echo "File " $FIRST_FILE " doesn't exist!"
                                        exit 30
                elif
			   [ ! -f $FIRST_FILE ] && [ $cur_time -le 2200 ]; then
			      "here I want to the script jump to sleep directly without execute the below loop."
	        else
                                fyr=`ls -e $FIRST_FILE |awk '{print $9}'`
                                echo $fyr
                                mth=`ls -e $FIRST_FILE |awk '{print $6}'`
                                dy=`ls -e $FIRST_FILE |awk '{printf "%0.2d\n", $7}'`
                                time=`ls -e $FIRST_FILE |awk '{print $8}'`
                                echo "arr, start_file, $file, $fyr, $mth, $dy, $time" >> "$SRCDIR"/arr_code_list
                fi
        fi
                while IFS="," read code folder file suffix
                do
                        filedir="$SRCDIR"/"$folder"
                        inputfile="$filedir"/"$file"
                        suffix=$suffix

                        if [ -f ${inputfile}[0-9]*${suffix} ] ; then
                                ofile=`ls -1tr $inputfile*|head -1`
                                mth=`ls -e $ofile |awk '{print $6}'`
                                dy=`ls -e $ofile |awk '{printf "%0.2d\n", $7}'`
                                time=`ls -e $ofile |awk '{print $8}'`
                                yr=`ls -e $ofile|awk '{print $9}'`
                                echo "$code, $file, $yr, $mth, $dy, $time" >> "$SRCDIR"/arr_code_list
                        else
                                echo "$code, $folder, $file, NOT FOUND" >>"$TGTDIR"/not_arrival_list
                        fi

                done < $FEED_LIST

                sleep 900
done

# in my elif 
[ ! -f $FIRST_FILE ] && [ $cur_time -le 2200 ]; then
flag==0
...
# in my second while add
if [ flag -eq 1]; then 
   while IFS=",", read ...
   .
   .
   done < $FEED_LIST
fi
sleep 900