How to convert floating point numbers in fortran format to decimals using shell (bash) tools? -

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How can the floating point number change in decimal using the shell tool? For example: I have 0.17879D-13 as input and 0.000000000000017879 as output. I tried awk and BC but could not succeed.

Now I have found something. I use sed to replace "D" from "E", then awk can process it, for example:

echo 0.17879D-13 | Sed S / D / E / G | Awk '{printf ("% .20f \ n", $ 1)}'


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