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How to extract date out of this filenames

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# 1  
Old 07-22-2009
How to extract date out of this filenames
I have filenames

filenameA_fg_MMDDYY.tar.gz
filenameASPQ_fg_MMDDYY.tar.gz
filenameAFTOPHYYINGH_fg_MMDDYY.tar.gz
filenameAGHYSW_fg_MMDDYY.tar.gz
Is there a way I can extract the date out of these filenames?
Thanks in advance
# 2  
Old 07-22-2009
Code:
echo $filename | awk -F"[_.]" '{print $3}'

# 3  
Old 07-22-2009
Thanks.It worked anchal
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