df(1B) SunOS/BSD Compatibility Package Commands df(1B)NAMEdf - display status of disk space on file systems
SYNOPSIS
/usr/ucb/df [-a] [-i] [-t type] [filesystem...] [filename...]
DESCRIPTION
The df utility displays the amount of disk space occupied by currently
mounted file systems, the amount of used and available space, and how
much of the file system's total capacity has been used.
If arguments to df are path names, df produces a report on the file
system containing the named file. Thus `df .' shows the amount of
space on the file system containing the current directory.
OPTIONS
The following options are supported:
-a Report on all filesystems including the uninteresting
ones which have zero total blocks (that is, auto-
mounter).
-i Report the number of used and free inodes. Print ` * '
if no information is available.
-t type Report on filesystems of a given type (for example, nfs
or ufs).
EXAMPLES
Example 1: Using df
A sample of output for df looks like:
example% df
Filesystem kbytes used avail capacity Mounted on
sparky:/ 7445 4714 1986 70% /
sparky:/usr 42277 35291 2758 93% /usr
Note that used+avail is less than the amount of space in the file sys‐
tem (kbytes); this is because the system reserves a fraction of the
space in the file system to allow its file system allocation routines
to work well. The amount reserved is typically about 10%; this can be
adjusted using tunefs (see tunefs(1M)). When all the space on a file
system except for this reserve is in use, only the super-user can allo‐
cate new files and data blocks to existing files. When a file system is
overallocated in this way, df can report that the file system is more
than 100% utilized.
FILES
/etc/mnttab List of file systems currently mounted
/etc/vfstab List of default parameters for each file system
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWscpu │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOdu(1), quot(1M), tunefs(1M), mnttab(4), attributes(5)SunOS 5.10 14 Sep 1992 df(1B)
