Command Reference Guide

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man1/!!!intro.1
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d
du(1) du(1)
NAME
du - summarize disk usage
SYNOPSIS
du [-a-s][-bkrx][-t type ][name ...]
DESCRIPTION
The du command gives the number of 512-byte blocks allocated for all files and (recursively) directories
within each directory and file specified by the name operands. The block count includes the indirect blocks
of the file. A file with two or more links is counted only once. If name is missing, the current working
directory is used.
By default, du generates an entry only for the name operands and each directory contained within those
hierarchies.
Options
The du command recognizes the following options:
-a Print entries for each file encountered in the directory hierarchies in addition to the
normal output.
-b For each name operand that is a directory for which file system swap has been
enabled, print the number of blocks the swap system is currently using.
-k Gives the block count in 1024-byte blocks.
-r Print messages about directories that cannot be read, files that cannot be accessed,
etc. du is normally silent about such conditions.
-s Print only the grand total of disk usage for each of the specified name operands.
-x Restrict reporting to only those files that have the same device as the file specified by
the name operand. Disk usage is normally reported for the entire directory hierarchy
below each of the given name operands.
-t type Restrict reporting to file systems of the specified type. (Example values for type are
hfs, cdfs, nfs, etc.) Multiple -t type options can be specified. Disk usage is
normally reported for the entire directory hierarchy below each of the given name
operands.
EXAMPLES
Display disk usage for the current working directory and all directories below it, generating error messages
for unreadable directories:
du -r
Display disk usage for the entire file system except for any cdfs or nfs mounted file systems:
du -t hfs /
Display disk usage for files on the root volume (/) only. No usage statistics are collected for any other
mounted file systems:
du -x /
WARNINGS
Block counts are incorrect for files that contain holes.
SEE ALSO
df(1M), bdf(1M), quot(1M).
STANDARDS CONFORMANCE
du: SVID2, SVID3, XPG2, XPG3, XPG4
HP-UX Release 11i: December 2000 − 1 − Section 1−−193
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