I understand. It does not specify the value in GiB, but the unit presented - you say it's only magnitude, I'm calling it unit here¹ – is G, which implies GiB, which makes it completely ambigous with regard to the output unit of e.g. `--block-size=G` switch.
Please compare: $ df --human-readable /dev/sdb2 | tail -1 /dev/sdb2 82G 67G 12G 86% /home $ df --block-size=G /dev/sdb2 | tail -1 /dev/sdb2 82G 67G 12G 86% /home $ df --si /dev/sdb2 | tail -1 /dev/sdb2 88G 71G 12G 86% /home $ df --block-size=GB /dev/sdb2 | tail -1 /dev/sdb2 88GB 71GB 12GB 86% /home Since `--block-size=GB` outputs the value in GB, and 'GB' is the unit appended, why doesn't `--si` do the same (use SI-units to mark "SI-magnitude" values)? ¹: Units are defined by order of magnitude prefix (e.g. G) and of base unit (e.g. B). In our example, if the program only supplies the magnitude and lets the common base unit be inferred, one gets 'GB' for `--si`. Which is correct. But what other unit of can one thus construct when using `-h` switch?
