Thanks Berny,
So when coreutils is not installed - use df -g; when it is installed use df -h
AIX says (to -h)
michael@x071:[/data/prj/gnu/coreutils/coreutils-8.23.211-b1d1a]/usr/bin/df -h
/usr/bin/df: Not a recognized flag: h
Usage: df [-P] | [-IMitv] [-gkm] [-s] [filesystem ...] [file ...]
And
- hey, you are the guys making the tools so you get to decide - but
unlike a GNU environment where people would be expected to replace
whatever is there with whatever you provide - that is not the case in
non-GNU. The user (e.g., myself, must skill up in the differences - and
always remember to specify the full path to be sure the desired, read
expected, behavior is there.
And, as in many things re: coreutils - the arguments available is the smallest issue.