aboutsummaryrefslogtreecommitdiff
path: root/coreutils-5.3.0-bin/man/cat1p/du.1p.txt
diff options
context:
space:
mode:
authorIndrajith K L2022-12-03 17:00:20 +0530
committerIndrajith K L2022-12-03 17:00:20 +0530
commitf5c4671bfbad96bf346bd7e9a21fc4317b4959df (patch)
tree2764fc62da58f2ba8da7ed341643fc359873142f /coreutils-5.3.0-bin/man/cat1p/du.1p.txt
downloadcli-tools-windows-f5c4671bfbad96bf346bd7e9a21fc4317b4959df.tar.gz
cli-tools-windows-f5c4671bfbad96bf346bd7e9a21fc4317b4959df.tar.bz2
cli-tools-windows-f5c4671bfbad96bf346bd7e9a21fc4317b4959df.zip
Adds most of the toolsHEADmaster
Diffstat (limited to 'coreutils-5.3.0-bin/man/cat1p/du.1p.txt')
-rw-r--r--coreutils-5.3.0-bin/man/cat1p/du.1p.txt253
1 files changed, 253 insertions, 0 deletions
diff --git a/coreutils-5.3.0-bin/man/cat1p/du.1p.txt b/coreutils-5.3.0-bin/man/cat1p/du.1p.txt
new file mode 100644
index 0000000..00a4f3f
--- /dev/null
+++ b/coreutils-5.3.0-bin/man/cat1p/du.1p.txt
@@ -0,0 +1,253 @@
+du(P) du(P)
+
+
+
+
+
+NAME
+ du - estimate file space usage
+
+SYNOPSIS
+ du [-a | -s][-kx][-H | -L][file ...]
+
+DESCRIPTION
+ By default, the du utility shall write to standard out-
+ put the size of the file space allocated to, and the
+ size of the file space allocated to each subdirectory
+ of, the file hierarchy rooted in each of the specified
+ files. By default, when a symbolic link is encountered
+ on the command line or in the file hierarchy, du shall
+ count the size of the symbolic link (rather than the
+ file referenced by the link), and shall not follow the
+ link to another portion of the file hierarchy. The size
+ of the file space allocated to a file of type directory
+ shall be defined as the sum total of space allocated to
+ all files in the file hierarchy rooted in the directory
+ plus the space allocated to the directory itself.
+
+ When du cannot stat() files or stat() or read directo-
+ ries, it shall report an error condition and the final
+ exit status is affected. Files with multiple links shall
+ be counted and written for only one entry. The directory
+ entry that is selected in the report is unspecified. By
+ default, file sizes shall be written in 512-byte units,
+ rounded up to the next 512-byte unit.
+
+OPTIONS
+ The du utility shall conform to the Base Definitions
+ volume of IEEE Std 1003.1-2001, Section 12.2, Utility
+ Syntax Guidelines.
+
+ The following options shall be supported:
+
+ -a In addition to the default output, report the
+ size of each file not of type directory in the
+ file hierarchy rooted in the specified file.
+ Regardless of the presence of the -a option, non-
+ directories given as file operands shall always
+ be listed.
+
+ -H If a symbolic link is specified on the command
+ line, du shall count the size of the file or file
+ hierarchy referenced by the link.
+
+ -k Write the files sizes in units of 1024 bytes,
+ rather than the default 512-byte units.
+
+ -L If a symbolic link is specified on the command
+ line or encountered during the traversal of a
+ file hierarchy, du shall count the size of the
+ file or file hierarchy referenced by the link.
+
+ -s Instead of the default output, report only the
+ total sum for each of the specified files.
+
+ -x When evaluating file sizes, evaluate only those
+ files that have the same device as the file spec-
+ ified by the file operand.
+
+
+ Specifying more than one of the mutually-exclusive
+ options -H and -L shall not be considered an error. The
+ last option specified shall determine the behavior of
+ the utility.
+
+OPERANDS
+ The following operand shall be supported:
+
+ file The pathname of a file whose size is to be writ-
+ ten. If no file is specified, the current direc-
+ tory shall be used.
+
+
+STDIN
+ Not used.
+
+INPUT FILES
+ None.
+
+ENVIRONMENT VARIABLES
+ The following environment variables shall affect the
+ execution of du:
+
+ LANG Provide a default value for the internationaliza-
+ tion variables that are unset or null. (See the
+ Base Definitions volume of IEEE Std 1003.1-2001,
+ Section 8.2, Internationalization Variables for
+ the precedence of internationalization variables
+ used to determine the values of locale cate-
+ gories.)
+
+ LC_ALL If set to a non-empty string value, override the
+ values of all the other internationalization
+ variables.
+
+ LC_CTYPE
+ Determine the locale for the interpretation of
+ sequences of bytes of text data as characters
+ (for example, single-byte as opposed to multi-
+ byte characters in arguments).
+
+ LC_MESSAGES
+ Determine the locale that should be used to
+ affect the format and contents of diagnostic mes-
+ sages written to standard error.
+
+ NLSPATH
+ Determine the location of message catalogs for
+ the processing of LC_MESSAGES .
+
+
+ASYNCHRONOUS EVENTS
+ Default.
+
+STDOUT
+ The output from du shall consist of the amount of space
+ allocated to a file and the name of the file, in the
+ following format:
+
+
+ "%d %s\n", <size>, <pathname>
+
+STDERR
+ The standard error shall be used only for diagnostic
+ messages.
+
+OUTPUT FILES
+ None.
+
+EXTENDED DESCRIPTION
+ None.
+
+EXIT STATUS
+ The following exit values shall be returned:
+
+ 0 Successful completion.
+
+ >0 An error occurred.
+
+
+CONSEQUENCES OF ERRORS
+ Default.
+
+ The following sections are informative.
+
+APPLICATION USAGE
+ None.
+
+EXAMPLES
+ None.
+
+RATIONALE
+ The use of 512-byte units is historical practice and
+ maintains compatibility with ls and other utilities in
+ this volume of IEEE Std 1003.1-2001. This does not man-
+ date that the file system itself be based on 512-byte
+ blocks. The -k option was added as a compromise measure.
+ It was agreed by the standard developers that 512 bytes
+ was the best default unit because of its complete his-
+ torical consistency on System V (versus the mixed
+ 512/1024-byte usage on BSD systems), and that a -k
+ option to switch to 1024-byte units was a good compro-
+ mise. Users who prefer the 1024-byte quantity can easily
+ alias du to du -k without breaking the many historical
+ scripts relying on the 512-byte units.
+
+ The -b option was added to an early proposal to provide
+ a resolution to the situation where System V and BSD
+ systems give figures for file sizes in blocks, which is
+ an implementation-defined concept. (In common usage, the
+ block size is 512 bytes for System V and 1024 bytes for
+ BSD systems.) However, -b was later deleted, since the
+ default was eventually decided as 512-byte units.
+
+ Historical file systems provided no way to obtain exact
+ figures for the space allocation given to files. There
+ are two known areas of inaccuracies in historical file
+ systems: cases of indirect blocks being used by the file
+ system or sparse files yielding incorrectly high values.
+ An indirect block is space used by the file system in
+ the storage of the file, but that need not be counted in
+ the space allocated to the file. A sparse file is one in
+ which an lseek() call has been made to a position beyond
+ the end of the file and data has subsequently been writ-
+ ten at that point. A file system need not allocate all
+ the intervening zero-filled blocks to such a file. It is
+ up to the implementation to define exactly how accurate
+ its methods are.
+
+ The -a and -s options were mutually-exclusive in the
+ original version of du. The POSIX Shell and Utilities
+ description is implied by the language in the SVID where
+ -s is described as causing "only the grand total" to be
+ reported. Some systems may produce output for -sa, but
+ a Strictly Conforming POSIX Shell and Utilities Applica-
+ tion cannot use that combination.
+
+ The -a and -s options were adopted from the SVID except
+ that the System V behavior of not listing non-directo-
+ ries explicitly given as operands, unless the -a option
+ is specified, was considered a bug; the BSD-based
+ behavior (report for all operands) is mandated. The
+ default behavior of du in the SVID with regard to
+ reporting the failure to read files (it produces no mes-
+ sages) was considered counter-intuitive, and thus it was
+ specified that the POSIX Shell and Utilities default
+ behavior shall be to produce such messages. These mes-
+ sages can be turned off with shell redirection to
+ achieve the System V behavior.
+
+ The -x option is historical practice on recent BSD sys-
+ tems. It has been adopted by this volume of
+ IEEE Std 1003.1-2001 because there was no other histori-
+ cal method of limiting the du search to a single file
+ hierarchy. This limitation of the search is necessary to
+ make it possible to obtain file space usage information
+ about a file system on which other file systems are
+ mounted, without having to resort to a lengthy find and
+ awk script.
+
+FUTURE DIRECTIONS
+ None.
+
+SEE ALSO
+ ls , the System Interfaces volume of
+ IEEE Std 1003.1-2001, stat()
+
+COPYRIGHT
+ Portions of this text are reprinted and reproduced in
+ electronic form from IEEE Std 1003.1, 2003 Edition,
+ Standard for Information Technology -- Portable Operat-
+ ing System Interface (POSIX), The Open Group Base Speci-
+ fications Issue 6, Copyright (C) 2001-2003 by the Insti-
+ tute of Electrical and Electronics Engineers, Inc and
+ The Open Group. In the event of any discrepancy between
+ this version and the original IEEE and The Open Group
+ Standard, the original IEEE and The Open Group Standard
+ is the referee document. The original Standard can be
+ obtained online at http://www.open-
+ group.org/unix/online.html .
+
+
+
+POSIX 2003 du(P)