NAME

df − report number of free disk blocks

SYNOPSIS

df [ −t ] [ −f ] [ file-systems ]

DESCRIPTION

Df prints out the number of free 512-byte blocks and free inodes available for online file systems by examining the counts kept in the super-block(s).  File-systems may be specified either by device name (e.g., /dev/dsk/0s1 ) or by mounted directory name (e.g., /usr ).  If the file-systems argument is unspecified, the free space on all of the mounted file systems is printed. 

The −t flag causes the total allocated block figures to be reported as well. 

If the −f flag is given, only an actual count of the blocks in the free list is made (free inodes are not reported).  With this option, df will report on raw devices. 

When df is used on an HFS file system, the file space reported is the space available to the ordinary user, and does not include the reserved file space specified by fs_minfree.  Unreported reserved blocks are available only to super-user.  See fs(4) for information about fs_minfree. 

FILES

/dev/dsk/∗

/etc/mnttab

SEE ALSO

du(1), fsck(1M), fs(4), mnttab(4). 

Hewlett-Packard Company  —  May 11, 2021