NAME

df − display status of disk space on file systems

SYNOPSIS

/usr/ucb/df [ −a ] [ −i ] [ −t type ] [ filesystem...  ] [ filename...  ]

AVAILABILITY

SUNWscpu

DESCRIPTION

df 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

−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

A sample of output for df looks like:

example% df
FilesystemkbytesusedavailcapacityMounted on
sparky:/ 7445 47141986   70%/
sparky:/usr42277352912758   93% /usr

Note: used+avail is less than the amount  of  space  in  the file  system (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 may be adjusted  using tunefs.  When  all the space on a file system except for this reserve is in use, only the super-user can allocate new files and data blocks to existing files.  When a file system is overallocated in this way, df may 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

SEE ALSO

du(1M), quot(1M), tunefs(1M), mnttab(4)

SunOS 5.5/SPARC  —  Last change: 14 Sep 1992