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On 09/03/2021 12:58, Philippe Bénézech via GNU coreutils Bug Reports wrote:
Dear maintener, I found a reproducible bug in df utility, installed in debian stable $ df --version |head -1 df (GNU coreutils) 8.30 $ cat /etc/debian_version 10.8 df displays G instead of GM as unit size for Gigabytes in power of 1000 (but the value is correct)
This is not restricted to G
$ df -BGB /home Sys. de fichiers blocs de 1GB Utilisé Disponible Uti% Monté sur /dev/mapper/ssd2 421GB 355GB 45GB 89% /home $ df -H /home Sys. de fichiers Taille Utilisé Dispo Uti% Monté sur /dev/mapper/ssd2 421G 355G 45G 89% /home
In summary df -H is outputting with a concise single letter, which is indistinguishable from that of df -h. I agree that's not ideal as the output can't be interpreted without the command as context. I.e. it restricts usage to direct command line usage. A possible change we could make here would be to use GB, MB etc. if --si is specified. But also -h and -H are not really useful outside of direct cli usage, I'm 50:50 on changing this. This was originally discussed at https://bugs.gnu.org/18119 Mentioned there is an option to use the new numfmt functionality to provide more control and unambiguous output. BTW the fact that a B suffix implies SI units is awkward in the first place, which I've documented the reasons for at: https://www.pixelbeat.org/docs/coreutils-gotchas.html#units cheers, Pádraig
