Du command

From RZWiki

A CLI program available on most Linux and Unix platforms; used to display usage information for files and folders on a file system.

Usage Syntax

du [options]

The most common options are:

• -h - display size data in a human readable format, Kb, Mb etc.
• -s - summarise, display only the total usage for all files and directories
• -a - display counts for all files and directories (only currnet directory is displayed by default)
• --max-depth=value - display information for sub-directories this depth below the current directory

The -a and -s are mutually exclusive

Usage Examples

du -hs - Display summary information only, in human readable format

du -h - Display information for this directory only, in human readable format

du -h --max-depth=1 - Display information for files in this directory and any sub-directories, to a maximum depth of 1

du -h | sort -n - Display information for this directory only, in human readable format, sort display order by size

Linux Usage Notes

With most Linux or Unix commands;

• Non root users may need to prefix commands with the sudo command, for example: sudo chmod 644 *
• Brief help can be displayed using the -h or --help parameter, for example: chmod --help
• A full command manual can be displayed using the man command followed by the command name, for example: man chmod
• Sometimes 'info' pages are used instead of or to provide more information than man pages; for example: info chmod
• Version information can normally be display using the -v, -V or --version parameter, for example: chmod --version. However, this paramater is also frequently used to display verbose output.

noinclude/noinclude

Typical Output

noinclude/noinclude

BigIP 1500 running v9.3.0; du -hs

7.5G

BigIP 1500 running v9.3.0; du -h

[...Lots of output omitted...]
4.0K    ./dev/dri
32K     ./dev/i2o
32K     ./dev/ida
4.0K    ./dev/inet
4.0K    ./dev/input
4.0K    ./dev/logicalco/bci
4.0K    ./dev/logicalco/dci1300
12K     ./dev/logicalco
4.0K    ./dev/net
0       ./dev/pts
4.0K    ./dev/raw
68K     ./dev/rd
4.0K    ./dev/scramdisk
60K     ./dev/shm
8.0K    ./dev/sx8
4.0K    ./dev/usb
4.0K    ./dev/video
4.0K    ./dev/video1394
4.0K    ./dev/watchdogs
500K    ./dev
916K    ./command
9.3M    ./opt/F5/sccp
9.3M    ./opt/F5
9.3M    ./opt
0       ./subdomain/control
0       ./subdomain
7.5G    .

Related Files

The du executable is normally found here: /usr/bin/du

Related Commands

The df command is used to display usage information for file systems on the device.

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