[engineadmin@domU-12-31-39-01-61-21:/ebs] du --help
Usage: du [OPTION]... [FILE]...
or: du [OPTION]... --files0-from=F
Summarize disk usage of each FILE, recursively for directories.
Mandatory arguments to long options are mandatory for short options too.
-a, --all write counts for all files, not just directories
--apparent-size print apparent sizes, rather than disk usage; although
the apparent size is usually smaller, it may be
larger due to holes in (`sparse') files, internal
fragmentation, indirect blocks, and the like
-B, --block-size=SIZE use SIZE-byte blocks
-b, --bytes equivalent to `--apparent-size --block-size=1'
-c, --total produce a grand total
-D, --dereference-args dereference FILEs that are symbolic links
--files0-from=F summarize disk usage of the NUL-terminated file
names specified in file F
-H like --si, but also evokes a warning; will soon
change to be equivalent to --dereference-args (-D)
-h, --human-readable print sizes in human readable format (e.g., 1K 234M 2G)
--si like -h, but use powers of 1000 not 1024
-k like --block-size=1K
-l, --count-links count sizes many times if hard linked
-m like --block-size=1M
-L, --dereference dereference all symbolic links
-P, --no-dereference don't follow any symbolic links (this is the default)
-0, --null end each output line with 0 byte rather than newline
-S, --separate-dirs do not include size of subdirectories
-s, --summarize display only a total for each argument
-x, --one-file-system skip directories on different file systems
-X FILE, --exclude-from=FILE Exclude files that match any pattern in FILE.
--exclude=PATTERN Exclude files that match PATTERN.
--max-depth=N print the total for a directory (or file, with --all)
only if it is N or fewer levels below the command
line argument; --max-depth=0 is the same as
--summarize
--time show time of the last modification of any file in the
directory, or any of its subdirectories
--time=WORD show time as WORD instead of modification time:
atime, access, use, ctime or status
--time-style=STYLE show times using style STYLE:
full-iso, long-iso, iso, +FORMAT
FORMAT is interpreted like `date'
--help display this help and exit
--version output version information and exit
SIZE may be (or may be an integer optionally followed by) one of following:
kB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T, P, E, Z, Y.
想看当前目录下所有目录以及子目录的大小：
# du -h .
“.”代表当前目录下。也可以换成一个明确的路径
-h表示用K、M、G的人性化形式显示
2.
只想看当前目录下abc目录的大小，并不想看其他目录以及其子目录：
# du -ch abc | tail -n 1
此种方法需要管道技术来管道du和tail两个命令来实现。
－c表示最后计算出所有所列目录的大小之和
# du -sh abc
-s表示总结的意思，即只列出一个总结的值
# du -h –max-depth=0 abc
–max-depth＝n表示只深入到第n层目录，此处设置为0，即表示不深入到子目录。
3.
列出abc目录及其子目录下所有目录和文件的大小：
# du -ah abc
-a表示包括目录和文件
4.
列出所有abc目录中的目录名不包括xyz字符串的目录的大小：
# du -h –exclude=’*xyz*’
5.
想在一个屏幕下列出更多的关于abc目录及子目录大小的信息：
# du -0h abc
-0（杠零）表示每列出一个目录的信息，不换行，而是直接输出下一个目录的信息。
