I am trying to find the size of a folder, and add 1M to it. The 1M is just spacing that I need for other reasons.
Here is what I have tried:
echo $($(du -sh myFolder) + 1) # command not found: 170M
echo $(`du -sh myFolder` + 1) # same as above
I want to be able to save this to a variable so I can use it in a dd call.
echo $(($(du -sb myFolder | cut -f1)+1048576))
du -sb gives a single sumarized result in bytes.
Alternatives if you can't use -b as Joao Morais suggested:
expr `du -hs myFolder | awk '{print $1}' | tr -d M` + 1
echo $((`du -hs myFolder | awk '{print $1}' | tr -d M` + 1))
Yet another way:
BLOCKSIZE=1048576 du -s myFolder | awk '{print $1+1}'
or to put in a variable:
mbs=$(BLOCKSIZE=1048576 du -s myFolder | awk '{print $1+1}')
Works on Linux, BSD, and OS X (possibly others).