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extract string from varying delimiter line

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# 1  
Old 08-10-2009
extract string from varying delimiter line
Hi

I have lines like this

a=1, b=2, c=3,
a=1, d=4, e=5, b=225,

I need to extract the b=nnn... value. I dont know how many other entries will be before and after it in each line. Ive tried a basic line like
awk '/b=/, $NF ~ /,/ ' myfile.txt
but I think that it doesnt care which comma it picks.

I to begin the selection with b= and end it with the NEXT comma after b=

Any ideas?
Thanks.
# 2  
Old 08-10-2009
please post ur desired output...
# 3  
Old 08-10-2009
desired output would be
b=2
b=225
# 4  
Old 08-10-2009
didnt test it but try...

Code:
awk -F, '{for(i=1;i<NF;i++){if($i ~ /b=[0-9]*/) print $i}}' inputfile

# 5  
Old 08-10-2009
Fantastic. Dedicate that brain to science upon your demise, may it be far into the future. ! Smilie . It worked like a dream
# 6  
Old 08-11-2009
Code:
grep -o "b\([=0-9]\)\+" inputfile

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