DU(1) General Commands Manual DU(1) NAME du -- display disk usage statistics SYNOPSIS du [-A] [-H | -L | -P] [-a | -s | -d depth | -t threshold] [-c] [-l] [-h | -k | -m | -B blocksize] [-n] [-x] [-I mask] [file ...] DESCRIPTION The du utility displays the file system block usage for each file argument and for each directory in the file hierarchy rooted in each directory argu- ment. If no file is specified, the block usage of the hierarchy rooted in the current directory is displayed. The options are as follows: -A Display the apparent size instead of the disk usage. This can be helpful when operating on compressed volumes or sparse files. -B blocksize Calculate block counts in blocksize byte blocks. This is different from the -k, -m options or setting BLOCKSIZE and gives an estimate of how much space the examined file hierachy would require on a filesystem with the given blocksize. Unless in -A mode, blocksize is rounded up to the next multiple of 512. -H Symbolic links on the command line are followed, symbolic links in file hierarchies are not followed. -L Symbolic links on the command line and in file hierarchies are fol- lowed. -I mask Ignore files and directories matching the specified mask. -P No symbolic links are followed. This is the default. -a Display an entry for each file in a file hierarchy. -h "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte. -r Generate messages about directories that cannot be read, files that cannot be opened, and so on. This is the default case. This op- tion exists solely for conformance with X/Open Portability Guide Issue 4 ("XPG4"). -s Display an entry for each specified file. (Equivalent to -d 0) -t threshold Display only entries for which size exceeds threshold. If threshold is negative, display only entries for which size is less than the absolute value of threshold. -d depth Display an entry for all files and directories depth directories deep. -c Display a grand total. -k Display block counts in 1024-byte (1-Kbyte) blocks. -l If a file has multiple hard links, count its size many times. The default behavior of du is to count files with multiple hard links only once. When the -l option is specified, the hard link checks are disabled, and these files are counted (and displayed) as many times as they are found. -m Display block counts in 1048576-byte (1-Mbyte) blocks. -n Ignore files and directories with user "nodump" flag (UF_NODUMP) set. -x File system mount points are not traversed. The du utility counts the storage used by symbolic links and not the files they reference unless the -H or -L option is specified. If either the -H or -L options are specified, storage used by any symbolic links which are followed is not counted or displayed. ENVIRONMENT BLOCKSIZE If the environment variable BLOCKSIZE is set, and the -k, -m or -h options are not specified, the block counts will be displayed in units of that block size. If BLOCKSIZE is not set, and the -k, -m or -h options are not specified, the block counts will be displayed in 512-byte blocks. SEE ALSO df(1), chflags(2), fts(3), symlink(7), quot(8) HISTORY A du command appeared in Version 1 AT&T UNIX. FreeBSD 8.2 November 6, 2008 DU(1)
NAME | SYNOPSIS | DESCRIPTION | ENVIRONMENT | SEE ALSO | HISTORY
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