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'\" te .\" Copyright (c) 1992, The X/Open Company Ltd. All rights reserved. .\" Portions Copyright (c) 2007, 2022, Oracle and/or its affiliates. .\" Oracle gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at http://www.opengroup.org/bookstore/. .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions 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.opengroup.org/unix/online.html. This notice shall appear on any product containing this material. .TH du 1 "29 Nov 2022" "Oracle Solaris 11.4" "User Commands" .SH NAME du \- summarize disk usage .SH SYNOPSIS .LP .nf \fB/usr/bin/du\fR [\fB-dorx\fR] [\fB-a\fR | \fB-s\fR] [\fB-h\fR | \fB-k\fR | \fB-m\fR] [\fB-H\fR | \fB-L\fR] [\fB--scale\fR[=\fIitem1\fR,\fIitem2\fR,...]] [\fIfile\fR ...] .fi .LP .nf \fB/usr/xpg4/bin/du\fR [\fB-dorx\fR] [\fB-a\fR | \fB-s\fR] [\fB-h\fR | \fB-k\fR | \fB-m\fR] [\fB-H\fR | \fB-L\fR] [\fB--scale\fR[=\fIitem1\fR,\fIitem2\fR,...]] [\fIfile\fR ...] .fi .SH DESCRIPTION .sp .LP The \fBdu\fR utility writes to standard output 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. The size of the file space allocated to a file of type directory is 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. This sum will include the space allocated to any extended attributes encountered. .sp .LP Files with multiple links will be counted and written for only one entry. The directory entry that is selected in the report is unspecified. By default, file sizes are written in 512-byte units, rounded up to the next 512-byte unit. .SS "/usr/xpg4/bin/du" .sp .LP When \fBdu\fR cannot obtain file attributes or read directories (see \fBstat\fR(2)), it will report an error condition and the final exit status will be affected. .SH OPTIONS .sp .LP The following options are supported for \fB/usr/bin/du\fR and \fB/usr/xpg4/bin/du\fR: .sp .ne 2 .mk .na \fB\fB-a\fR\fR .ad .br .sp .6 .RS 4n 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 \fB-a\fR option, non-directories given as \fIfile\fR operands will always be listed. .RE .sp .ne 2 .mk .na \fB\fB-d\fR\fR .ad .br .sp .6 .RS 4n Do not cross filesystem boundaries. For example, the command, \fBdu -d /\fR reports usage only on the root partition. .RE .sp .ne 2 .mk .na \fB\fB-h\fR\fR .ad .br .sp .6 .RS 4n All sizes are scaled to a human readable format. The \fB-h\fR option is equivalent to using the \fB--scale=max,1024\fR option. .RE .sp .ne 2 .mk .na \fB\fB-H\fR\fR .ad .br .sp .6 .RS 4n If a symbolic link to a directory is specified on the command line, process the symbolic link by using the directory which the symbolic link references, rather than the link itself. .RE .sp .ne 2 .mk .na \fB\fB-k\fR\fR .ad .br .sp .6 .RS 4n Write the files sizes in units of 1024 bytes, rather than the default 512-byte units. .RE .sp .ne 2 .mk .na \fB\fB-L\fR\fR .ad .br .sp .6 .RS 4n Process symbolic links by using the file or directory which the symbolic link references, rather than the link itself. .RE .sp .ne 2 .mk .na \fB\fB-m\fR\fR .ad .br .sp .6 .RS 4n Write the files sizes in units of megabytes, rather than the default 512-byte units. .RE .sp .ne 2 .mk .na \fB\fB-o\fR\fR .ad .br .sp .6 .RS 4n Do not add child directories' usage to a parent's total. Without this option, the usage listed for a particular directory is the space taken by the files in that directory, as well as the files in all directories beneath it. This option does nothing if \fB-s\fR is used. .RE .sp .ne 2 .mk .na \fB\fB-r\fR\fR .ad .br .sp .6 .RS 4n Generate diagnostic messages about unreadable directories and files whose status cannot be obtained. /usr/bin/du is silent if these conditions arise and \fB-r\fR is not specified. \fB/usr/xpg4/bin/du\fR acts as though \fB-r\fR is always specified. .RE .sp .ne 2 .mk .na \fB\fB-s\fR\fR .ad .br .sp .6 .RS 4n Instead of the default output, report only the total sum for each of the specified files. .RE .sp .ne 2 .mk .na \fB\fB--scale[=item1,item2,...\fR]\fR .ad .br .sp .6 .RS 4n All sizes are scaled to a human readable format, for example, \fB14K\fR, \fB234M\fR, \fB2.7G\fR, or \fB3.0T\fR. Scaling is done by repetitively dividing by \fB1024\fR, unless otherwise specified. \fB--scale\fR specified without arguments enables default scaled output, and is equivalent to \fB--scale=max,1024\fR. See \fBscale\fR(7) for a complete description of \fB--scale\fR features. .RE .sp .ne 2 .mk .na \fB\fB-x\fR\fR .ad .br .sp .6 .RS 4n When evaluating file sizes, evaluate only those files that have the same device as the file specified by the file operand. .RE .sp .LP Specifying more than one of the options in the mutually exclusive pair, \fB-H\fR and \fB-L\fR, is not considered an error. The last option specified determines the output format. .sp .LP Specifying more than one of the options in the mutually exclusive set of options \fB-h\fR, \fB-k\fR, and \fB-m\fR is not considered an error. The last option specified determines the output format. .SH OPERANDS .sp .LP The following operand is supported: .sp .ne 2 .mk .na \fB\fIfile\fR\fR .ad .RS 8n .rt The path name of a file whose size is to be written. If no \fIfile\fR is specified, the current directory is used. .RE .SH OUTPUT .sp .LP The output from \fBdu\fR consists of the amount of the space allocated to a file and the name of the file. .SH ENVIRONMENT VARIABLES .sp .LP See \fBenviron\fR(7) for descriptions of the following environment variables that affect the execution of \fBdu\fR: \fBLANG\fR, \fBLC_ALL\fR, \fBLC_CTYPE\fR, \fBLC_MESSAGES\fR, and \fBNLSPATH\fR. .SH EXIT STATUS .sp .LP The following exit values are returned: .sp .ne 2 .mk .na \fB\fB0\fR\fR .ad .RS 6n .rt Successful completion. .RE .sp .ne 2 .mk .na \fB\fB>0\fR\fR .ad .RS 6n .rt An error occurred. .RE .SH ATTRIBUTES .sp .LP See \fBattributes\fR(7) for descriptions of the following attributes: .SS "/usr/bin/du" .sp .TS tab( ) box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Availability system/core-os _ CSI Enabled _ Interface Stability Committed .TE .sp .SS "/usr/xpg4/bin/du" .sp .TS tab( ) box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Availability system/xopen/xcu4 _ CSI Enabled _ Interface Stability Standard .TE .sp .SH SEE ALSO .sp .LP \fBls\fR(1), \fBstat\fR(2), \fBattributes\fR(7), \fBenviron\fR(7), \fBfsattr\fR(7), \fBscale\fR(7), \fBstandards\fR(7) .SH NOTES .sp .LP A file with two or more links is counted only once. If, however, there are links between files in different directories where the directories are on separate branches of the file system hierarchy, \fBdu\fR will count the excess files more than once. .sp .LP Files containing holes will result in an incorrect block count. .SH HISTORY .sp .LP Support for the \fB--scale\fR option was added to both \fBdu\fR commands in Oracle Solaris 11.4.30. .sp .LP Support for the \fB-m\fR option was added to both \fBdu\fR commands in Oracle Solaris 11.0.0. .sp .LP Support for the \fB-x\fR option was added to the \fB/usr/bin/du\fR command in Oracle Solaris 11.0.0. .sp .LP Support for the \fB-d\fR and \fB-o\fR options was added to the \fB/usr/xpg4/bin/du\fR command in Oracle Solaris 11.0.0. .sp .LP Support for the \fB-H\fR option was added to both \fBdu\fR commands in Solaris 10 3/05. .sp .LP Support for the \fB-L\fR option was added to the \fB/usr/xpg4/bin/du\fR command in Solaris 10 3/05. .sp .LP Support for the \fB-h\fR option was added to both \fBdu\fR commands in Solaris 9. .sp .LP Support for the \fB-L\fR option was added to the \fB/usr/bin/du\fR command in Solaris 2.6. .sp .LP Support for large files was added to both \fBdu\fR commands in Solaris 2.6. .sp .LP The \fB/usr/xpg4/bin/du\fR command was introduced in Solaris 2.5, with support for the \fB-a\fR, \fB-k\fR, \fB-r\fR, \fB-s\fR, and \fB-x\fR options. .sp .LP Support for the \fB-d\fR and \fB-o\fR options was added to the \fB/usr/bin/du\fR command in Solaris 2.3. .sp .LP Support for the \fB-k\fR and \fB-r\fR options was added to the \fB/usr/bin/du\fR command in Solaris 2.0. .sp .LP The \fB/usr/bin/du\fR command, with support for the \fB-a\fR and \fB-s\fR options, has been present in all Sun and Oracle releases of Solaris.