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POSIX
512 -k 1024
POSIX
-a
-k 512 1024
-s
-x
GNU
-a, --all
-b, --bytes
-c, --total
-h, --human-readable
M 10 2 M 1,048,576
-k, --kilobytes
-l, --count-links
()
-m, --megabytes
(1,048,576 )
-s, --summarize
-x, --one-file-system
-D, --dereference-args
/usr/tmp
-H, --si
M (SI) 2 10 M 1,000,000
-L, --dereference
( )
-S, --separate-dirs
-X FILE, --exclude-from=FILE
--exclude FILE FILE `-'
--block-size=SIZE
SIZE
--exclude=PATTERN
PATTERN `du --exclude='*~'' `~'
--max-depth=DEPTH
DEPTH (-all ) 0 `du --max-depth=0' `du -s'
GNU
--help
--version
--
BSD HP-UX NFS du HP-UX BSD NFS 2 HP-UX HP-UX du
1024 (POSIXLY_CORRECT 512 ) --block-size=SIZE
DU_BLOCK_SIZE, BLOCK_SIZE, POSIXLY_CORRECT.
human-readable si B 10 D `BLOCK_SIZE=1KB' `BLOCK_SIZE=1024'
`BLOCK_SIZE=1KD' `BLOCK_SIZE=1000'
( --human-readable --si )
k : --human-readable 2^10 = 1024 --si 10^3 = 1000
M : 2^20 = 1,048,576 10^6 = 1,000,000
G : 2^30 = 1,073,741,824 10^9 = 1,000,000,000
T : 2^40 = 1,099,511,627,776 10^12 = 1,000,000,000,000
P : 2^50 = 1,125,899,906,842,624 10^15 = 1,000,000,000,000,000
E : 2^60 = 1,152,921,504,606,846,976 10^18 =
1,000,000,000,000,000,000
Z : 2^70 = 1,180,591,620,717,411,303,424 10^21 =
1,000,000,000,000,000,000,000
Y : 2^80 = 1,208,925,819,614,629,174,706,176 10^24 =
1,000,000,000,000,000,000,000,000
DF_BLOCK_SIZE, BLOCK_SIZE, OSIXLY_CORRECT LANG, LC_ALL, LC_CTYPE,
LC_MESSAGES
POSIX 1003.2
fileutils-4.1 du ; aeb@cwi.nl, aw@mail1.bet1.puv.fi, ragnar@ragnar-
hojland.com bug-fileutils@gnu.org