A good way to list the filesystem space in MB's or GB's on a unix server

A good way to list the filesystem space in MB's or GB's on a unix server.

The following commands will give the listing of the free space on the server in descending order. In my case, I'm searching for mountpoints which have /u*. This way, I get a quick overview of the free space on the server.

HP-UX:

bdf /u* | awk '($0 !~ /ounted/ && $5 !~ /100/) {printf("%s\t%dM\n",$6,$4/1024)}' | sort -n -r +1|grep /u |grep -v "/usr"



SUN OS:

df -k /u* | awk '($0 !~ /ounted/ && $5 !~ /100/) {printf("%s\t%dG\n",$6,$4/1024/1024)}' | sort -n -r +1 |grep /u |grep -v "/usr"