DU(1) DU(1)
NAME
du - disk usage
SYNOPSIS
du [ -aefhnqstu ] [ -b size ] [ -p SI-prefix ] [ file ... ]
DESCRIPTION
Du gives the number of Kbytes allocated to data blocks of
named files and, recursively, of files in named directories.
It assumes storage is quantized in units of 1024 bytes
(Kbytes) by default. Other values can be set by the -b
option; size is the number of bytes, optionally suffixed k
to specify multiplication by 1024. If file is missing, the
current directory is used. The count for a directory
includes the counts of the contained files and directories.
The -a option prints the number of blocks for every file in
a directory. Normally counts are printed only for contained
directories.
The -f option suppresses the printing of warning messages.
The -n option prints the size in bytes and the name of each
file; it sets -a.
The -t option prints, in the format of du -n, the modified
time of each file rather than the size. If the options -tu
are specified then the accessed time is printed.
The -q option prints, in the format of du -n, the QID path
of each file rather than the size.
The -s option causes du to descend the hierarchy as always,
but to print only a summary line for each file.
The -e option causes du to print values (sizes, times or QID
paths) in `scientific notation' via print(2)'s %g.
The -h option causes du to print values (sizes, times or QID
paths) in scientific notation, scaled to less than 1024, and
with a suitable SI prefix (e.g., `G' for binary gigabytes).
The -p option causes du to print values (sizes, times or QID
paths) in units of SI-prefix. Case is ignored when looking
up SI-prefix. An empty SI-prefix corresponds to a scale fac-
tor of 1 (e.g., print sizes in bytes).
EXAMPLES
Print the size of `/tmp' in fractional binary gigabytes:
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DU(1) DU(1)
% du -sepg /tmp
.6960154 /tmp
Print the size of `/tmp' in bytes and in scientific nota-
tion:
% du -sep '' /tmp
7.473408e+08 /tmp
SOURCE
/sys/src/cmd/du.c
Page 2 Plan 9 (printed 11/18/24)