.\"
.\" Sccsid @(#)du.1b	1.11 (gritter) 1/23/05
.\" Parts taken from du(1), Unix 32V:
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.TH DU 1B "1/23/05" "Heirloom Toolchest" "BSD System Compatibility"
.SH NAME
du \- (BSD) summarize disk usage
.SH SYNOPSIS
\fBdu\fR [\fB\-ahHLsxo\fR] [\fIname\fR ...]
.SH DESCRIPTION
.I Du
gives the number of blocks (1024 bytes) contained in all files
and (recursively) directories within each specified directory or
file
.IR name .
If
.I name
is missing, 
`\fB.\fR'
is used.
.PP
The following options are supported:
.TP
.B \-a
This option causes an entry to be generated
for each file.
Absence of either causes an entry to be generated for
each directory only.
.TP
.B \-s
This option causes only the grand total to
be given.
Overrides the \-a option.
.PP
The following option has been introduced by POSIX.2:
.TP
.B \-x
Do not cross device boundaries
when descending a directory hierarchy.
.PP
The following options have been introduced by POSIX.1-2001:
.TP
.B \-H
Follow symbolic links given on the command line
and count the size of the files they refer to,
but do not follow symbolic links found during directory traversal
and count the sizes of these symbolic links themselves.
.TP
.B \-L
Always follow symbolic links
and count the sizes of the files they refer to.
.PP
The following options are extensions:
.TP
.B \-h
Print statistics in human-readable powers of 1024,
i.\|e. `K' for kilobyte,
`M' for megabyte,
`G' for gigabyte,
`T' for terabyte,
`P' for petabyte,
and `E' for exabyte.
.TP
.B \-o
Do not add sizes of subdirectories to parent directories.
.PP
A file which has two links to it is only counted once.
.SH "SEE ALSO"
df(1)
.SH NOTES
Non-directories
given as arguments (not under
.B \-a
or
.B \-s
options) are not listed.
.PP
Files with holes may produce incorrect results.