Displaying Blocks and Files Used

The df command and its given options can be used to report the number of free disk files and blocks.

Syntax:

df [option]

option:

-k - prints the free disk space in terms of k bytes. Let consider the subsequent example

# df

Filesystem       1024-blocks        Used            Available   Capacity           Mounted on

/dev/hda3        247871            212909            22161              91%                 /

/dev/hda6        50717              15507              32591              32%                 /var

/dev/hda7        481998            15                    457087            0%                   /local

# df     -k                                                        

Filesystem       1k-blocks        Used                Available        Use%  Mounted on

/dev/hda7        396623            71930              304212            19%                 /

/dev/hda1        101089            2453                93417              3%                   /boot

/dev/hda6        1517920          12952              1427860          1%                   /home 

/dev/hda5        1517920          1276308          164504            89%                 /usr

/dev/hda9        54416              18548              33059              36%                 /var

The columns reported displays:

Filesystem       -   It refers to the file system being displays. File systems mounted using NFS are displays as hostname:/dir/that/is/mounted

1024-blocks    -    The number of 1 KB blocks the file system consists of. (Its whole size)

Used                - The number of blocks used.

Available        - Display the number of blocks available for use.

Capacity         -   Percentage of partition presently used.

Mounted on   -    The location in the directory tree where this partition has been mounted on.

The du command summarizes disk usage through directory. It recurses by all subdirectories and displays disk usage through each subdirectory with a last total at the end.