UNIX> df
Filesystem           1K-blocks      Used Available Use% Mounted on
rootfs               140038192  43287528  94653512  32% /
fakefs               140038192  43287528  94653512  32% /root
fakefs               720911148 623758980  95055016  87% /oracle
fakefs                  507748    139636    368112  28% /database
fakefs                  507748    139636    368112  28% /applications
fakefs               140038192  43287528  94653512  32% /tmp
fakefs               140038192  43287528  94653512  32% /temp
fakefs               140038192  43287528  94653512  32% /log
fakefs               140038192  43287528  94653512  32% /core
fakefs               140038192  43287528  94653512  32% /opt
fakefs               140038192  43287528  94653512  32% /script

UNIX> df -h
Filesystem            Size  Used Avail Use% Mounted on
rootfs                134G   42G   91G  32% /
fakefs                134G   42G   91G  32% /root
fakefs                688G  595G   91G  87% /oracle
fakefs                496M  137M  360M  28% /database
fakefs                496M  137M  360M  28% /applications
fakefs                134G   42G   91G  32% /tmp
fakefs                134G   42G   91G  32% /temp
fakefs                134G   42G   91G  32% /log
fakefs                134G   42G   91G  32% /core
fakefs                134G   42G   91G  32% /opt
fakefs                134G   42G   91G  32% /script

OPTIONS
 
Show information about the filesystem on which each FILE resides, or all 
filesystems by default.
 
Mandatory arguments to long options are mandatory for short options too.
 
-a, --all
    include filesystems having 0 blocks 
-B, --block-size=SIZE use SIZE-byte blocks
-h, --human-readable
    print sizes in human readable format (e.g., 1K 234M 2G) 
-H, --si
    likewise, but use powers of 1000 not 1024 
-i, --inodes
    list inode information instead of block usage 
-k
    like --block-size=1K 
-l, --local
    limit listing to local filesystems 
--no-sync
    do not invoke sync before getting usage info (default) 
-P, --portability
    use the POSIX output format 
--sync
    invoke sync before getting usage info 
-t, --type=TYPE
    limit listing to filesystems of type TYPE 
-T, --print-type
    print filesystem type 
-x, --exclude-type=TYPE
    limit listing to filesystems not of type TYPE 
-v
    (ignored) 
--help
    display this help and exit 
--version
    output version information and exit 
 
SIZE may be (or may be an integer optionally followed by) one of following: 
kB 1000, K 1024, MB 1,000,000, M 1,048,576, and so on for G, T, P, E, Z, Y.