du.1

<B>Digital的Unix操作系统VAX 4.2源码</B>

.\" SCCSID: @(#)du.1	8.1	9/11/90
.TH du 1
.SH Name
du \- print amount of disk usage
.SH Syntax
.B du
[\fB\-as\fR] [\|\fIname...\fR\|]
.SH Description
.NXR "disk" "summarizing usage"
.NXR "du command"
.NXAM "du command" "quot command"
The
.PN du
command gives the number of kilobytes 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
Absence of either \fB\-a\fR or \fB\-s\fR causes an entry to be generated for
each directory only.
.PP
A file that has two links to it is only counted once.
.SH Options
.IP \fB\-a\fR 5
Displays the disk usage for each file.
.IP \fB\-s\fR 5
Displays a summary total only.
.SH Restrictions
.NXR "du command" "restricted"
Non-directories
given as arguments (not under
.B \-a
option) are not listed.
.sp
If there are too many distinct linked files,
.PN du
counts the excess files multiply.
.SH See Also
df(1), quot(8)