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Rename files in a format

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# 1  
Old 09-30-2013
Rename files in a format
Hi All,

I have a requirement like, the source file is in the format :
XXXXXXXX.D0000.GZZZZ

I have to rename the file in the format :

XXXXXXXX.XXXXXXXX.D0000.GZZZZV00

I have to only rename the file if and only if the source file format has 3 parts as shown above.
# 2  
Old 09-30-2013
Code:
 ls -1 | while read filename
do
newName=$(echo $filename | awk -F"[.]" 'NF==3{print $1"."$1"."$2"."$3"V00"}'); 
[ -n "$newName" ] && mv $filename $newName
newName=""
done

# 3  
Old 09-30-2013
Rename files in a format
Hi Pravin,

Thanks for replying. COuld you please explain the code as I am new to Unix.
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