du - estimate file space usage SYNOPSIS du [OPTION][FILE] DESCRIPTION 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 (鈥榮parse鈥? files, internal fragmentation, indirect blocks, and the like -B, --block-size=SIZE use SIZE-byte blocks -b, --bytes equivalent to 鈥?-apparent-size --block-size=1鈥? -c, --total produce a grand total -D, --dereference-args dereference FILEs that are symbolic links -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 -L, --dereference dereference all symbolic links -P, --no-dereference don鈥檛 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 filesystems -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
中文解释：
du(disk usage)
功能说明：显示目录或文件的大小。
语 法：
du [-abcDhHklmsSx][-L <符号连接>][-X <文件>][--block-size][--exclude=<目录或文件>][--max-depth=<目录层数>][--help][--version][目录或文件]