mirror of https://github.com/tLDP/LDP
Updated to incorporate changes in FHS 2.3
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<title>/etc</title>
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<para>This is the nerve center of your system, it contains all system
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related configuration files in here or in its sub-directories. For this
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reason, it's a good idea to backup this directory regularly. It will
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related configuration files in here or in its sub-directories. A
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"configuration file" is defined as a local file used to control
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the operation of a program; it must be static and cannot be an executable binary.
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For this reason, it's a good idea to backup this directory regularly. It will
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definitely save you a lot of re-configuration later if you re-install or
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lose your current installation. Normally, no binaries should be or are
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located here.</para>
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@ -2150,101 +2152,112 @@ dummy:x:1001:1001:,,,:/home/dummy:/bin/bash
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should contain commands to set up aliases, functions, options, key bindings,
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etc.</para></listitem></varlistentry></variablelist></para>
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<para>Compliance with the FSSTND require that the following directories, or
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<para>Compliance with the FSSTND requires that the following directories, or
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symbolic links to directories are required in /etc:</para>
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<para><screen> /etc -- Host-specific system configuration /etc/opt
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Configuration for /opt
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<para><screen>
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opt Configuration for /opt
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X11 Configuration for the X Window system (optional)
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sgml Configuration for SGML (optional)
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xml Configuration for XML (optional)
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The following directories, or symbolic links to directories must be in /etc,
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if the corresponding subsystem is installed:
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/etc -- Host-specific system configuration /etc/X11 Configuration for the X
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Window System (optional) /etc/sgml Configuration for SGML and XML (optional)
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The following files, or symbolic links to files, must be in /etc if
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the corresponding subsystem is installed:
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Systems that use the shadow password suite will have additional
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configuration files in /etc (/etc/shadow and others) and programs in
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/usr/sbin (useradd, usermod, and others).
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csh.login Systemwide initialization file for C shell logins
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(optional)
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exports NFS filesystem access control list (optional)
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fstab Static information about filesystems (optional)
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ftpusers FTP daemon user access control list (optional)
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gateways File which lists gateways for routed (optional)
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gettydefs Speed and terminal settings used by getty (optional)
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group User group file (optional)
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host.conf Resolver configuration file (optional)
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hosts Static information about host names (optional)
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hosts.allow Host access file for TCP wrappers (optional)
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hosts.deny Host access file for TCP wrappers (optional)
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hosts.equiv List of trusted hosts for rlogin, rsh, rcp (optional)
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hosts.lpd List of trusted hosts for lpd (optional)
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inetd.conf Configuration file for inetd (optional)
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inittab Configuration file for init (optional)
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issue Pre-login message and identification file (optional)
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ld.so.conf List of extra directories to search for shared libraries
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(optional)
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motd Post-login message of the day file (optional)
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mtab Dynamic information about filesystems (optional)
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mtab does not fit the static nature of /etc: it is excepted
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for historical reasons. On some Linux systems, this may be a
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symbolic link to /proc/mounts, in which case this exception is not required.
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mtools.conf Configuration file for mtools (optional)
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networks Static information about network names (optional)
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passwd The password file (optional)
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printcap The lpd printer capability database (optional)
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profile Systemwide initialization file for sh shell logins (optional)
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protocols IP protocol listing (optional)
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resolv.conf Resolver configuration file (optional)
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rpc RPC protocol listing (optional)
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securetty TTY access control for root login (optional)
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services Port names for network services (optional)
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shells Pathnames of valid login shells (optional)
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syslog.conf Configuration file for syslogd (optional)
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opt Configuration for /opt
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The following files, or symbolic links to files, must be in /etc if the
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corresponding subsystem is installed (it is recommended that files be
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stored in subdirectories of /etc/ rather than directly in /etc:
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csh.login Systemwide initialization file for C shell logins (optional)
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exports NFS filesystem access control list (optional)
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fstab Static information about filesystems (optional)
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ftpusers FTP daemon user access control list (optional)
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gateways File which lists gateways for routed (optional)
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gettydefs Speed and terminal settings used by getty (optional)
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group User group file (optional)
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host.conf Resolver configuration file (optional)
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hosts Static information about host names (optional)
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hosts.allow Host access file for TCP wrappers (optional)
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hosts.deny Host access file for TCP wrappers (optional)
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hosts.equiv List of trusted hosts for rlogin, rsh, rcp (optional)
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hosts.lpd List of trusted hosts for lpd (optional)
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inetd.conf Configuration file for inetd (optional)
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inittab Configuration file for init (optional)
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issue Pre-login message and identification file (optional)
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ld.so.conf List of extra directories to search for shared libraries
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(optional)
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motd Post-login message of the day file (optional)
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mtab Dynamic information about filesystems (optional)
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mtools.conf Configuration file for mtools (optional)
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networks Static information about network names (optional)
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passwd The password file (optional)
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printcap The lpd printer capability database (optional)
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profile Systemwide initialization file for sh shell logins (optional)
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protocols IP protocol listing (optional)
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resolv.conf Resolver configuration file (optional)
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rpc RPC protocol listing (optional)
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securetty TTY access control for root login (optional)
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services Port names for network services (optional)
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shells Pathnames of valid login shells (optional)
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syslog.conf Configuration file for syslogd (optional)
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mtab does not fit the static nature of /etc: it is excepted for historical
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reasons. On some Linux systems, this may be a symbolic link to /proc/mounts,
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in which case this exception is not required.
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/etc/opt : Configuration files for /opt
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Host-specific configuration files for add-on application software packages
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must be installed within the directory
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/etc/opt/<package>, where <package> is the name of the
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subtree in /opt where the static data from that package is stored. No
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structure is imposed on the internal arrangement of
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/etc/opt/<package>. If a configuration file must reside in a
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different location in order for the package or system to function properly,
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it may be placed in a location other than /etc/opt/<package>.
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/etc/X11 : Configuration for the X Window System (optional) /etc/X11 is the
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location for all X11 host-specific configuration. This directory is
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necessary to allow local control if /usr is mounted read only. The following
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files, or symbolic links to files, must be in ` /etc/X11 if the
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corresponding subsystem is installed: Xconfig The configuration file for
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early versions of XFree86 (optional) XF86Config The configuration file for
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XFree86 versions 3 and 4 (optional) Xmodmap Global X11 keyboard modification
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file (optional) Subdirectories of /etc/X11 may include those for xdm and for
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any other programs (some window managers, for example) that need them.
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must be installed within the directory /etc/opt/&60;subdir&62;, where
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&60;subdir&62; is the name of the subtree in /opt where the static data
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from that package is stored.
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No structure is imposed on the internal arrangement of /etc/opt/&60;subdir&62;.
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If a configuration file must reside in a different location in order for the
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package or system to function properly, it may be placed in a location other
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than /etc/opt/&60;subdir&62;.
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The rationale behind this subtree is best explained by refering to the
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rationale for /opt.
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/etc/X11 : Configuration for the X Window System (optional)
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/etc/X11 is the location for all X11 host-specific configuration. This
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directory is necessary to allow local control if /usr is mounted read only.
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The following files, or symbolic links to files, must be in /etc/X11 if the
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corresponding subsystem is installed:
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Xconfig The configuration file for early versions of XFree86 (optional)
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XF86Config The configuration file for XFree86 versions 3 and 4 (optional)
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Xmodmap Global X11 keyboard modification file (optional)
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Subdirectories of /etc/X11 may include those for xdm and for any other
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programs (some window managers, for example) that need them.
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/etc/X11/xdm holds the configuration files for xdm. These are most of the
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files previously found in /usr/lib/X11/xdm. Some local variable data for xdm
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is stored in /var/lib/xdm. We recommend that window managers with only one
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configuration file which is a default .*wmrc file must name it system.*wmrc
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(unless there is a widely-accepted alternative name) and not use a
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subdirectory. Any window manager subdirectories must be identically named to
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the actual window manager binary.
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/etc/sgml : Configuration files for SGML
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and XML (optional) Generic configuration files defining high-level
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parameters of the SGML or XML systems are installed here. Files with names
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*.conf indicate generic configuration files. File with names *.cat are the
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DTD-specific centralized catalogs, containing references to all other
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catalogs needed to use the given DTD. The super catalog file catalog
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references all the centralized catalogs.
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files previously found in /usr/lib/X11/xdm. Some local variable data for
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xdm is stored in /var/lib/xdm.
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It is recommended that window managers with only one configuration file
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which is a default .*wmrc file must name it system.*wmrc (unless there is
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a widely-accepted alternative name) and not use a subdirectory. Any window
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manager subdirectories must be identically named to the actual window
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manager binary.
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/etc/sgml : Configuration files for SGML (optional)
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Generic configuration files defining high-level parameters of the SGML
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systems are installed here. Files with names *.conf indicate generic
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configuration files. File with names *.cat are the DTD-specific centralized
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catalogs, containing references to all other catalogs needed to use the
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given DTD. The super catalog file catalog references all the centralized
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catalogs.
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/etc/xml : Configuration files for XML (optional)
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Generic configuration files defining high-level parameters of the XML
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systems are installed here. Files with names *.conf indicate generic
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configuration files. The super catalog file catalog references all the
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centralized catalogs.
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</screen></para>
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</sect1>
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