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sed h and g options

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# 8  
Old 01-04-2006
Extending on the solution i gave earlier...

Code:
[/tmp]$ sed -n -e '/BEGIN/{
:top
N
/END/b end
b top
:end
s_.*xxx.*yyy.*_&_p
s_.*yyy.*xxx.*_&_p
}' input.txt

# 9  
Old 01-04-2006
Thanks Vino ..
# 10  
Old 01-04-2006
Hi ..

I got a script using hold and get for the original block search I had requested ..

it is

sed -e '
/^BEGIN$/,/^END$/!d
/^END$/!{H;/^BEGIN$/h;d;}
H;g;/xxx/!d
' temp1

it works fine

.. Since I am pretty new to sed I couldn't understand the flow ..

Could any one explain me this script

Thanks..Siva
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