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Searching a string in a particular file name

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# 1  
Old 08-26-2013
Searching a string in a particular file name
Hello,

I have a file name like FIRST_DPF_DAILY_CUST_0826152322.txt

i need to extract the string after the third "_" underscore upto timestamp ends i.e CUST_0826152322

can anyone help me with the code

Thank you!

Regards
Srikanth Sagi
# 2  
Old 08-26-2013
Code:
echo "FIRST_DPF_DAILY_CUST_0826152322.txt" | awk '/CUST/ {f=NR} f&&NR==f {a=$1} f&&NR-1==f {print a"_"$1}' RS="_"
CUST_0826152322.txt

Code:
echo "FIRST_DPF_DAILY_CUST_0826152322.txt" | awk '{print substr($0,match($0,/CUST/))}'
CUST_0826152322.txt

Code:
echo "FIRST_DPF_DAILY_CUST_0826152322.txt" | awk -F_ '{print $4"_"$5}'
CUST_0826152322.txt

# 3  
Old 08-26-2013
If your date part is a fixed 10 characters then you can use this

Code:
echo $FILENAME | awk -F"_" '{print $4"_"substr($5,1,10)}'

# 4  
Old 08-26-2013
Code:
V=${A#*_*_*_}; echo ${V%.*}
CUST_0826152322

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