Sorry It does not seem the output that i want it is like i have posted the wrong question with different meaning

As I want is

have a file A in one line

ASDSSDSDDDAAAAEDCDALSOSSKDQWSDSD

i want to extract where say from 4 to 8

and the output print is

SSDSD

In reply to Re^2: print and extract the line by vis1982
in thread print and extract the line by vis1982

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