du(1) [netbsd man page]
DU(1) BSD General Commands Manual DU(1) NAME
du -- display disk usage statistics SYNOPSIS
du [-H | -L | -P] [-a | -d depth | -s] [-cghkmnrx] [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 direc- tory argument. If no file is specified, the block usage of the hierarchy rooted in the current directory is displayed. The options are as follows: -H Symbolic links on the command line are followed. (Symbolic links encountered in the tree traversal are not followed.) -L All symbolic links are followed. -P No symbolic links are followed. -a Display an entry for each file in the file hierarchy. -c Display the grand total after all the arguments have been processed. -d Display an entry files and directories depth directories deep. -g If the -g flag is specified, the number displayed is the number of gigabyte (1024*1024*1024 bytes) blocks. -h If the -h flag is specified, the numbers will be displayed in "human-readable" format. Use unit suffixes: B (Byte), K (Kilobyte), M (Megabyte), G (Gigabyte), T (Terabyte) and P (Petabyte). -k By default, du displays the number of blocks as returned by the stat(2) system call, i.e. 512-byte blocks. If the -k flag is speci- fied, the number displayed is the number of kilobyte (1024 bytes) blocks. Partial numbers of blocks are rounded up. -m If the -m flag is specified, the number displayed is the number of megabyte (1024*1024 bytes) blocks. -n Ignore files and directories with user "nodump" flag (UF_NODUMP) set. -r Generate warning messages about directories that cannot be read. This is the default behaviour. -s Display only the grand total for the specified files. -x Filesystem mount points are not traversed. du 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. The -H, -L and -P options over- ride each other and the command's actions are determined by the last one specified. Files having multiple hard links are counted (and displayed) a single time per du execution. ENVIRONMENT
BLOCKSIZE If the environment variable BLOCKSIZE is set, and the -g, -h, -k, and -m options are not specified, the block counts will be dis- played in units of that size block. SEE ALSO
df(1), chflags(2), fts(3), getbsize(3), symlink(7), quot(8) HISTORY
A du command appeared in Version 6 AT&T UNIX. BSD
September 24, 2006 BSD
Check Out this Related Man Page
DF(1) BSD General Commands Manual DF(1) NAME
df -- display free disk space SYNOPSIS
df [-agklmn] [-G | -i | -P] [-t type] [file | file_system ...] DESCRIPTION
df displays statistics about the amount of free disk space on the specified file_system or on the file system of which file is a part. By default, all sizes are reported in 512-byte block counts. If neither a file or a file_system operand is specified, statistics for all mounted file systems are displayed (subject to the -l and -t options below). Note that the printed count of available blocks takes minfree into account, and thus will be negative when the number of free blocks on the filesystem is less than minfree. The following options are available: -a Show all mount points, including those that were mounted with the MNT_IGNORE flag. -G Display all the fields of the structure(s) returned by statvfs(2). This option cannot be used with the -i or -P options, and it is modelled after the Solaris -g option. This option will override the -g, -h, -k, and -m options, as well as any setting of BLOCKSIZE. -g The -g option causes the numbers to be reported in gigabytes (1024*1024*1024 bytes). -h "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte, Petabyte, Exabyte in order to reduce the number of digits to four or less. -i Include statistics on the number of free inodes. -k By default, all sizes are reported in 512-byte block counts. The -k option causes the numbers to be reported in kilobytes (1024 bytes). -l Display statistics only about mounted file systems with the MNT_LOCAL flag set. If a non-local file system is given as an argument, a warning is issued and no information is given on that file system. -m The -m option causes the numbers to be reported in megabytes (1024*1024 bytes). -n Print out the previously obtained statistics from the file systems. This option should be used if it is possible that one or more file systems are in a state such that they will not be able to provide statistics without a long delay. When this option is speci- fied, df will not request new statistics from the file systems, but will respond with the possibly stale statistics that were previ- ously obtained. -P Produce output in the following portable format: If both the -P and -k option are specified, the output will be preceded by the following header line, formatted to match the data following it: "Filesystem 1024-blocks Used Available Capacity Mounted on " If the -P option is specified without the -k options, the output will be preceded by the following header line, formatted to match the data following it: "Filesystem <blksize>-blocks Used Available Capacity Mounted on " The header line is followed by data formatted as follows: "%s %d %d %d %d%% %s ", <file system name>, <total space>, <space used>, <space free>, <percentage used>, <file system root> Note that the -i option may not be specified with -P. -t type Is used to indicate the actions should only be taken on filesystems of the specified type. More than one type may be specified in a comma-separated list. The list of filesystem types can be prefixed with ``no'' to specify the filesystem types for which action should not be taken. If a file system is given on the command line that is not of the specified type, a warning is issued and no information is given on that file system. ENVIRONMENT
BLOCKSIZE If the environment variable BLOCKSIZE is set, and the -g, -h, -k and -m options are not specified, the block counts will be dis- played in units of that size block. SEE ALSO
quota(1), fstatvfs(2), getvfsstat(2), statvfs(2), getbsize(3), getmntinfo(3), fs(5), fstab(5), mount(8), quot(8), tunefs(8) HISTORY
A df utility appeared in Version 6 AT&T UNIX. BSD
March 4, 2008 BSD