Shell Programming and Scripting

HI,
I am new to unix . I don't know it is proper place to put my doubt or not .In my requirement , I am reading a file data and validating each fields and one record having 11 fields and each field having specific length.so when i read the file and validation the 11 fields. It taking 3-4 min per 1000 records. i need to optimize the time . Below are the code snap shot . Please help me regarding this.

Thanks in Advance .


code : while read line
do
FIELD=`echo $line| awk -F, '{print NF }'`
FIRST=`echo $line | awk -F, '{print $1 }' | wc -c`
SECOND=`echo $line | awk -F, '{print $2 }' | wc -c`
THIRD=`echo $line | awk -F, '{print $3 }' | wc -c`
FOURTH=`echo $line | awk -F, '{print $4 }' | wc -c`
FIFTH=`echo $line | awk -F, '{print $5 }' | wc -c`
SIXTH=`echo $line | awk -F, '{print $6 }' | wc -c`
SEVENTH=`echo $line | awk -F, '{print $7 }' | wc -c`
EIGHT=`echo $line | awk -F, '{print $8 }' | wc -c`
NINTH=`echo $line | awk -F, '{print $9 }' | wc -c`
TENTH=`echo $line | awk -F, '{print $10 }' | wc -c`
LASTFILED=`echo $line | awk -F, '{print $11 }'`
if [ ${FIELD} -ne 11 ]
then
echo " ERROR:- Invalid number of seperator at Record no : ${COUNT} " >> ${LOG_FILE}
fi
done < (Input file name)


input data:
xl,35077,CTC (13),13,BBSR,,,,,CDM
xA,85013,CTC (13),13,BBSR1,,,,,CDO

see if you wanna check the no of fields and the lenghth of other fileds
use length(string) function of awk for example

Code:

awk -F"," 'NF==1&&length($1)>something&&length($2)<something||length($3)... so on

if you give your exact req i am sure it can be done with single awk command i mean a oneliner

Thanks vidyadhar85 for your reply,
Actually my requirement is , It will check the each fields length of records and if it correct , then it will check the 3 field values ,If the third field values is blank , then it replace with 7th field value...and then create a output file with field 1,2,3 and 4th.

Also can you suggest me the shell script is better than the perl script or not , Because this requirement for optimization ..i need to check the time taken for execution .


Please Help me regarding this.