


DU(1L)							DU(1L)


NNAAMMEE
       du - summarize disk usage

SSYYNNOOPPSSIISS
       dduu [-abcklsxDLS] [--all] [--total] [--count-links] [--sum-
       marize]	[--bytes]   [--kilobytes]    [--one-file-system]
       [--separate-dirs]   [--dereference]   [--dereference-args]
       [--help] [--version] [path...]

DDEESSCCRRIIPPTTIIOONN
       This manual page documents the GNU version of dduu.  dduu dis-
       plays  the  amount of disk space used by each argument and
       for each subdirectory of directory arguments.   The  space
       is  measured  in 1K blocks by default, unless the environ-
       ment  variable  POSIXLY_CORRECT	is  set,  in  which  case
       512-byte blocks are used.

   OOPPTTIIOONNSS
       _-_a_, _-_-_a_l_l
	      Display counts for all files, not just directories.

       _-_b_, _-_-_b_y_t_e_s
	      Print sizes in bytes.

       _-_c_, _-_-_t_o_t_a_l
	      Write a grand total of all of the	arguments  after
	      all  arguments  have  been  processed.  This can be
	      used to find out the disk	usage	of  a  directory,
	      with some files excluded.

       _-_k_, _-_-_k_i_l_o_b_y_t_e_s
	      Print sizes in kilobytes.	This overrides the envi-
	      ronment variable POSIXLY_CORRECT.

       _-_l_, _-_-_c_o_u_n_t_-_l_i_n_k_s
	      Count the size of all  files,  even  if  they  have
	      appeared already in another hard link.

       _-_s_, _-_-_s_u_m_m_a_r_i_z_e
	      Display only a total for each argument.

       _-_x_, _-_-_o_n_e_-_f_i_l_e_-_s_y_s_t_e_m
	      Skip  directories that are on different filesystems
	      from the one that the argument being  processed  is
	      on.

       _-_D_, _-_-_d_e_r_e_f_e_r_e_n_c_e_-_a_r_g_s
	      Dereference  symbolic  links  that are command line
	      arguments.  Does not affect other	symbolic  links.
	      This  is	helpful for finding out the disk usage of
	      directories like /usr/tmp where they  are	symbolic
	      links.





FSF			GNU File Utilities			1





DU(1L)							DU(1L)


       _-_L_, _-_-_d_e_r_e_f_e_r_e_n_c_e
	      Dereference  symbolic  links  (show  the disk space
	      used by the file or directory that the link  points
	      to instead of the space used by the link).

       _-_S_, _-_-_s_e_p_a_r_a_t_e_-_d_i_r_s
	      Count  the  size	of each directory separately, not
	      including the sizes of subdirectories.

       _-_-_h_e_l_p Print a usage message and exit with a non-zero sta-
	      tus.

       _-_-_v_e_r_s_i_o_n
	      Print  version  information  on standard error then
	      exit.

BBUUGGSS
       On BSD systems, dduu reports sizes that are half the correct
       values  for files that are NFS-mounted from HP-UX systems.
       On HP-UX systems, it reports sizes that are twice the cor-
       rect  values  for files that are NFS-mounted from BSD sys-
       tems.  This is due to a flaw in HP-UX; it also affects the
       HP-UX dduu program.


































FSF			GNU File Utilities			2


