Update du(1):
- Sort arguments alphabetically where appropriate - '-B blocksize' is not mutually exclusive of '-h|-k|-m' - Mention '-t' in synopsis - Other wording improvements - Update usage() output to reflect the new synopsis [1] - Other miscellaneous improvements PR: 162438 Submitted by: arundel Reviewed by: Benjamin Kaduk (kaduk ! mit.edu), jhb[1] (original version) MFC after: 1 week
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Glen Barber
parent
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=228356
@ -28,7 +28,7 @@
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.\" @(#)du.1 8.2 (Berkeley) 4/1/94
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.\" $FreeBSD$
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.\"
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.Dd November 6, 2008
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.Dd December 8, 2011
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.Dt DU 1
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.Os
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.Sh NAME
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@ -36,15 +36,13 @@
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.Nd display disk usage statistics
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.Sh SYNOPSIS
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.Nm
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.Op Fl A
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.Op Fl Aclnx
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.Op Fl H | L | P
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.Op Fl a | s | d Ar depth | Fl t Ar threshold
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.Op Fl c
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.Op Fl l
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.Op Fl h | k | m | B Ar blocksize
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.Op Fl n
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.Op Fl x
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.Op Fl h | k | m
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.Op Fl a | s | d Ar depth
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.Op Fl B Ar blocksize
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.Op Fl I Ar mask
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.Op Fl t Ar threshold
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.Op Ar
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.Sh DESCRIPTION
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The
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@ -65,7 +63,9 @@ Calculate block counts in
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.Ar blocksize
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byte blocks.
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This is different from the
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.Fl k, m
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.Fl h, k
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and
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.Fl m
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options or setting
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.Ev BLOCKSIZE
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and gives an estimate of how much space the examined file hierarchy would
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@ -79,20 +79,46 @@ is rounded up to the next multiple of 512.
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.It Fl H
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Symbolic links on the command line are followed, symbolic links in file
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hierarchies are not followed.
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.It Fl L
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Symbolic links on the command line and in file hierarchies are followed.
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.It Fl I Ar mask
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Ignore files and directories matching the specified
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.Ar mask .
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.It Fl L
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Symbolic links on the command line and in file hierarchies are followed.
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.It Fl P
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No symbolic links are followed.
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This is the default.
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.It Fl a
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Display an entry for each file in a file hierarchy.
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.It Fl c
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Display a grand total.
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.It Fl d Ar depth
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Display an entry for all files and directories
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.Ar depth
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directories deep.
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.It Fl h
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"Human-readable" output.
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.Dq Human-readable
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output.
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Use unit suffixes: Byte, Kilobyte, Megabyte,
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Gigabyte, Terabyte and Petabyte.
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.It Fl k
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Display block counts in 1024-byte (1-Kbyte) blocks.
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.It Fl l
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If a file has multiple hard links, count its size multiple times.
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The default behavior of
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.Nm
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is to count files with multiple hard links only once.
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When the
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.Fl l
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option is specified, the hard link checks are disabled, and these files
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are counted (and displayed) as many times as they are found.
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.It Fl m
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Display block counts in 1048576-byte (1-Mbyte) blocks.
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.It Fl n
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Ignore files and directories with user
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.Dq nodump
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flag
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.Pq Dv UF_NODUMP
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set.
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.It Fl r
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Generate messages about directories that cannot be read, files
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that cannot be opened, and so on.
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@ -111,31 +137,6 @@ If
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is negative, display only entries for which size is less than the absolute
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value of
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.Ar threshold .
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.It Fl d Ar depth
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Display an entry for all files and directories
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.Ar depth
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directories deep.
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.It Fl c
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Display a grand total.
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.It Fl k
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Display block counts in 1024-byte (1-Kbyte) blocks.
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.It Fl l
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If a file has multiple hard links, count its size many times.
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The default behavior of
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.Nm
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is to count files with multiple hard links only once.
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When the
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.Fl l
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option is specified, the hard link checks are disabled, and these files
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are counted (and displayed) as many times as they are found.
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.It Fl m
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Display block counts in 1048576-byte (1-Mbyte) blocks.
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.It Fl n
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Ignore files and directories with user
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.Dq nodump
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flag
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.Pq Dv UF_NODUMP
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set.
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.It Fl x
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File system mount points are not traversed.
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.El
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@ -152,25 +153,32 @@ If either the
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.Fl H
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or
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.Fl L
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options are specified, storage used by any symbolic links which are
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followed is not counted or displayed.
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option is specified, storage used by any symbolic links which are
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followed is not counted (or displayed).
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.Pp
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The
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.Fl h, k
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and
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.Fl m
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options all override each other; the last one specified determines
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the block counts used.
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.Sh ENVIRONMENT
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.Bl -tag -width BLOCKSIZE
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.It Ev BLOCKSIZE
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If the environment variable
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.Ev BLOCKSIZE
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is set, and the
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.Fl k, m
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.Fl h, k
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or
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.Fl h
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.Fl m
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options are not specified, the block counts will be displayed in units of
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that block size.
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If
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.Ev BLOCKSIZE
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is not set, and the
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.Fl k, m
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.Fl h, k
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or
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.Fl h
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.Fl m
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options are not specified, the block counts will be displayed in 512-byte
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blocks.
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.El
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@ -499,9 +499,9 @@ static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: du [-A] [-H | -L | -P] [-a | -s | -d depth] [-c] "
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"[-l] [-h | -k | -m | -B bsize] [-n] [-x] [-I mask] "
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"[file ...]\n");
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"usage: du [-Aclnx] [-H | -L | -P] [-h | -k | -m ] "
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"[-a | -s | -d depth] [-B blocksize] [-I mask] "
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"[-t threshold] [file ...]\n");
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exit(EX_USAGE);
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}
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