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DF(1)		    UNIX Programmer's Manual		    DF(1)



[1mNAME
     [0mdf - report free disk space on file systems

[1mSYNOPSIS
     df [0m[ [1m-a [0m] [ [1m-i [0m] [ [1m-t [0m_t_y_p_e ] [ _f_i_l_e_s_y_s_t_e_m...  ] [
     _f_i_l_e_n_a_m_e...  ]

[1mDESCRIPTION
     [0m_d_f prints out the amount of used and available disk space on
     the specified _f_i_l_e_s_y_s_t_e_m, e.g. ``/dev/rp0a'', or on the
     filesystem in which the specified _f_i_l_e, is contained.  If no
     file system is specified, the values for all the normally
     mounted file systems are printed.	The reported numbers are
     in kilobytes.  Used without arguments, _d_f reports on all
     mounted file systems, producing something like:
	  tutorial% [1mdf
	  [0mFilesystem	kbytes	    used  avail  capacity  Mounted on
	  /dev/sd0a	 72661	   28386  37008       43%  /
	  oak:/source	546932	  474393  17845       96%  /source

     Note that 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
     _t_u_n_e_f_s.  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, _d_f may report that the file
     system is more than 100% utilized.

     If arguments to _d_f are disk partitions (for example,
     /_d_e_v/_i_p_0_a) or UNIX path names, _d_f 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.

[1mOPTIONS
     -a   [0mReports on all filesystems including the uninteresting
	  ones which have zero total blocks. (e.g.  _a_u_t_o_m_o_u_n_t_e_r )

     [1m-i   [0mReport also the number of inodes which are used and
	  free.

     [1m-t [0m_t_y_p_e
	  Report on filesystems of a given _t_y_p_e (for example, nfs
	  or 4.3).

[1mFILES
     [0m/etc/mtab	   list of currently mounted filesystems





Printed 18/6/99     Revision 1.5 of 01/07/90			1






DF(1)		    UNIX Programmer's Manual		    DF(1)



[1mSEE ALSO
     [0m_d_u(_1_V), _m_t_a_b(_5), _q_u_o_t(_8), _t_u_n_e_f_s(_8)





















































Printed 18/6/99     Revision 1.5 of 01/07/90			2



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