Allow decimal sizes (1k = 1000 instead of 1024)

[eugenesvk]

Currently all sizes are displayed with a binary prefix (1k=1024=2¹⁰)
Please add an option to use decimal prefixes (1k=1000=10³)
Thanks!

[bootandy]

That doesn't strike me as that useful, what's your usecase?

However du does allow something similar with the -B blocksize, so I'm happy to leave this open if you want to work on it.

[eugenesvk]

the usecase is the same as yours — getting size information about your disk, it's just that I don't find the 1024 representation useful, and it also doesn't match my file manager's config

[danie-dejager]

@bootandy The current output could be improved to better distinguish between ISO and binary as you are currently printing binary values and not ISO. df has similar output (G) due to the historic limitation on screen real-estate.

→ df -h | grep /home
/dev/mapper/cl_grbl--af001l2-home   20G   13G  7.7G  62% /home

→ df -H | grep /home
/dev/mapper/cl_grbl--af001l2-home   22G   14G  8.3G  62% /home

Should (Could optionally) dust print Gi instead?

[bootandy]

Ok, there seems to be some interest in this so I'll look adding a flag to output ISO values as well as binary.

df:
-H, --si print sizes in powers of 1000 (e.g., 1.1G)