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>Filesystem Hierarchy Standard</TITLE
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<DIV
CLASS="BOOK"
><A
NAME="AEN1"
></A
><DIV
CLASS="TITLEPAGE"
><H1
CLASS="TITLE"
><A
NAME="AEN2"
>Filesystem Hierarchy Standard</A
></H1
><H3
CLASS="CORPAUTHOR"
>Filesystem Hierarchy Standard Group</H3
><H4
CLASS="EDITEDBY"
>Edited by</H4
><H3
CLASS="EDITOR"
>Rusty Russell</H3
><H3
CLASS="EDITOR"
>Daniel Quinlan</H3
><H3
CLASS="EDITOR"
>Christopher Yeoh</H3
><P
CLASS="COPYRIGHT"
>Copyright © 1994-2004 Daniel Quinlan</P
><P
CLASS="COPYRIGHT"
>Copyright © 2001-2004 Paul 'Rusty' Russell</P
><P
CLASS="COPYRIGHT"
>Copyright © 2003-2004 Christopher Yeoh</P
><DIV
><DIV
CLASS="ABSTRACT"
><P
></P
><A
NAME="AEN30"
></A
><P
>This standard consists of a set of requirements and guidelines for file
and directory placement under UNIX-like operating systems. The
guidelines are intended to support interoperability of applications,
system administration tools, development tools, and scripts as well as
greater uniformity of documentation for these systems.</P
><P
></P
></DIV
></DIV
><DIV
CLASS="LEGALNOTICE"
><P
></P
><A
NAME="AEN25"
></A
><P
>All trademarks and copyrights are owned by their owners, unless
specifically noted otherwise. Use of a term in this document should not
be regarded as affecting the validity of any trademark or service
mark.</P
><P
>Permission is granted to make and distribute verbatim copies of
this standard provided the copyright and this permission notice are
preserved on all copies.</P
><P
>Permission is granted to copy and distribute modified versions of this
standard under the conditions for verbatim copying, provided also that
the title page is labeled as modified including a reference to the
original standard, provided that information on retrieving the original
standard is included, and provided that the entire resulting derived
work is distributed under the terms of a permission notice identical to
this one.</P
><P
>Permission is granted to copy and distribute translations of this
standard into another language, under the above conditions for modified
versions, except that this permission notice may be stated in a
translation approved by the copyright holder.</P
><P
></P
></DIV
><HR></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>1. <A
HREF="#INTRODUCTION"
>Introduction</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE"
>Purpose</A
></DT
><DT
><A
HREF="#CONVENTIONS"
>Conventions</A
></DT
></DL
></DD
><DT
>2. <A
HREF="#THEFILESYSTEM"
>The Filesystem</A
></DT
><DT
>3. <A
HREF="#THEROOTFILESYSTEM"
>The Root Filesystem</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE2"
>Purpose</A
></DT
><DT
><A
HREF="#REQUIREMENTS"
>Requirements</A
></DT
><DT
><A
HREF="#SPECIFICOPTIONS"
>Specific Options</A
></DT
><DT
><A
HREF="#BINESSENTIALUSERCOMMANDBINARIES"
>/bin : Essential user command binaries (for use by all users)</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE3"
>Purpose</A
></DT
><DT
><A
HREF="#REQUIREMENTS2"
>Requirements</A
></DT
><DT
><A
HREF="#SPECIFICOPTIONS2"
>Specific Options</A
></DT
></DL
></DD
><DT
><A
HREF="#BOOTSTATICFILESOFTHEBOOTLOADER"
>/boot : Static files of the boot loader</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE4"
>Purpose</A
></DT
><DT
><A
HREF="#SPECIFICOPTIONS3"
>Specific Options</A
></DT
></DL
></DD
><DT
><A
HREF="#DEVDEVICEFILES"
>/dev : Device files</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE5"
>Purpose</A
></DT
><DT
><A
HREF="#SPECIFICOPTIONS4"
>Specific Options</A
></DT
></DL
></DD
><DT
><A
HREF="#ETCHOSTSPECIFICSYSTEMCONFIGURATION"
>/etc : Host-specific system configuration</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE6"
>Purpose</A
></DT
><DT
><A
HREF="#REQUIREMENTS3"
>Requirements</A
></DT
><DT
><A
HREF="#SPECIFICOPTIONS5"
>Specific Options</A
></DT
><DT
><A
HREF="#ETCOPTCONFIGURATIONFILESFOROPT"
>/etc/opt : Configuration files for /opt</A
></DT
><DT
><A
HREF="#ETCX11CONFIGURATIONFORTHEXWINDOWS"
>/etc/X11 : Configuration for the X Window System (optional)</A
></DT
><DT
><A
HREF="#ETCSGMLCONFIGURATIONFILESFORSGMLAN"
>/etc/sgml : Configuration files for SGML (optional)</A
></DT
><DT
><A
HREF="#AEN795"
>/etc/xml : Configuration files for XML (optional)</A
></DT
></DL
></DD
><DT
><A
HREF="#HOMEUSERHOMEDIRECTORIES"
>/home : User home directories (optional)</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE10"
>Purpose</A
></DT
><DT
><A
HREF="#REQUIREMENTS4A"
>Requirements</A
></DT
></DL
></DD
><DT
><A
HREF="#LIBESSENTIALSHAREDLIBRARIESANDKERN"
>/lib : Essential shared libraries and kernel modules</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE11"
>Purpose</A
></DT
><DT
><A
HREF="#REQUIREMENTS5"
>Requirements</A
></DT
><DT
><A
HREF="#SPECIFICOPTIONS7"
>Specific Options</A
></DT
></DL
></DD
><DT
><A
HREF="#LIBLTQUALGTALTERNATEFORMATESSENTIAL"
>/lib<qual> : Alternate format essential shared libraries (optional)</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE12"
>Purpose</A
></DT
><DT
><A
HREF="#REQUIREMENTS6"
>Requirements</A
></DT
></DL
></DD
><DT
><A
HREF="#MEDIAMOUNTPOINT"
>/media : Mount point for removeable media</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSEMEDIAMOUNTPOINT"
>Purpose</A
></DT
><DT
><A
HREF="#SPECIFICOPTIONSMEDIAMOUNT"
>Specific Options</A
></DT
></DL
></DD
><DT
><A
HREF="#MNTMOUNTPOINTFORATEMPORARILYMOUNT"
>/mnt : Mount point for a temporarily mounted filesystem</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE13"
>Purpose</A
></DT
></DL
></DD
><DT
><A
HREF="#OPTADDONAPPLICATIONSOFTWAREPACKAGES"
>/opt : Add-on application software packages</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE14"
>Purpose</A
></DT
><DT
><A
HREF="#REQUIREMENTS7"
>Requirements</A
></DT
></DL
></DD
><DT
><A
HREF="#ROOTHOMEDIRECTORYFORTHEROOTUSER"
>/root : Home directory for the root user (optional)</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE15"
>Purpose</A
></DT
></DL
></DD
><DT
><A
HREF="#SBINSYSTEMBINARIES"
>/sbin : System binaries</A
></DT
><DD
><DL
><DT
><A
HREF="#PURPOSE16"
>Purpose</A
></DT
><DT
><A
HREF="#REQUIREMENTS8"
>Requirements</A
></DT
><DT
><A
HREF="#SPECIFICOPTIONS8"
>Specific Options</A