06-04-2009
> cat a.txt
a = "This is a print statement
print a
b = "This contains print statement"
print b
>
>
>
> sed 's/^[pP][rR][iI][nN][tT]/#print/' a.txt
a = "This is a print statement
#print a
b = "This contains print statement"
#print b
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