Annihilannic I downloaded your dispus program and it kinda works. I'm running AIX 5100-04 and here is the error I get from your program:
mount: A flag requires a parameter: v
Usage: mount [-fipr] [-n Node] [-o Options] [-t Type] [-{v|V} Vfs]
[-a | all | [[Node:]Device] [Directory]]
dispus v2.3 - Reading usage in /
1. 2,190,504 KB usr
2. 364,896 KB proc
3. 63,949 KB var
4. 55,062 KB opt
5. 37,996 KB tmp
11,636 KB core
7. 5,044 KB etc
8. 3,824 KB lpp
9. 3,684 KB gtechcommands
3,436 KB gtkcmds.tar
11. 2,993 KB home
12. 2,244 KB sbin
13. 368 KB .netscape
196 KB smit.log
15. 172 KB .dt
76 KB smit.script
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dispus>