Disclaimer: I am not 100% certain whether this is a bug in GNU coreutils
or FreeBSD Linux emulation layer because the behavior is weird. So,
please bear with me.
Consider the following output on FreeBSD 13 from FreeBSD's df(1):
$ df -t ufs -b -T -a
Filesystem Type 512-blocks U
I did some more investigation with stat(2). Running native on FreeBSD
with Python os package 'st_dev':
$ df -t ufs | cut -f 6 -w | sed 1d | xargs -I% python ~/stat.py %
/: 108
/tmp: 110
/var: 111
/var/tmp: 112
/usr: 113
/usr/local: 161
/usr/ports: 142
/usr/obj: 141
/usr/local/pgsql: 140
/var/ne
