Multiply first column by variable depending on unit

Question

I have du -sh output saved to txt file:

2.1G /home/x/sample/2GB/ 101M /home/x/sample/100MB/ ... 

What I want is to multiply each value in the first column by a value taken from variable depending on the unit. So if for instance unit is G then multiply by $G and append the the result at the end of each line. How to do this in Bash?

Answer 1

It sounds like you're trying to get the bytes, so instead of using -h (which is a shortcut for --human-readable), just don't use it.

du -s will get you the summarized byte count.