></DIV
></DIV
><DIV
CLASS="SECTION"
><HR><H2
CLASS="SECTION"
><A
NAME="VARSPOOLAPPLICATIONSPOOLDATA"
>/var/spool : Application spool data</A
></H2
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="PURPOSE47"
>Purpose</A
></H3
><P
><TT
CLASS="FILENAME"
>/var/spool</TT
> contains data which is awaiting
some kind of later processing. Data in
<TT
CLASS="FILENAME"
>/var/spool</TT
> represents work to be done in the
future (by a program, user, or administrator); often data is deleted
after it has been processed.
<A
NAME="AEN2493"
HREF="#FTN.AEN2493"
><SPAN
CLASS="footnote"
>[43]</SPAN
></A
></P
></DIV
><DIV
CLASS="SECTION"
><HR><H3
CLASS="SECTION"
><A
NAME="SPECIFICOPTIONS25"
>Specific Options</A
></H3
><P
>The following directories, or symbolic links to directories,
must be in <TT
CLASS="FILENAME"
>/var/spool</TT
>, if the corresponding
subsystem is installed:</P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><A
NAME="AEN2501"
></A
><TABLE
BORDER="0"
FRAME="void"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Directory</TH
><TH
>Description</TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="FILENAME"
>lpd</TT
></TD
><TD
>Printer spool directory (optional)</TD
></TR
><TR
><TD
><TT
CLASS="FILENAME"
>mqueue</TT
></TD
><TD
>Outgoing mail queue (optional)</TD
></TR
><TR
><TD
><TT
CLASS="FILENAME"
>news</TT
></TD
><TD
>News spool directory (optional)</TD
></TR
><TR
><TD
><TT
CLASS="FILENAME"
>rwho</TT
></TD
><TD
>Rwhod files (optional)</TD
></TR
><TR
><TD
><TT
CLASS="FILENAME"
>uucp</TT
></TD
><TD
>Spool directory for UUCP (optional)</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><DIV
CLASS="SECTION"
><HR><H3
CLASS="SECTION"
><A
NAME="VARSPOOLLPDLINEPRINTERDAEMONPRINTQU"
>/var/spool/lpd : Line-printer daemon print queues (optional)</A
></H3
><DIV
CLASS="SECTION"
><H4
CLASS="SECTION"
><A
NAME="PURPOSE48"
>Purpose</A
></H4
><P
>The lock file for <B
CLASS="COMMAND"
>lpd</B
>,
<TT
CLASS="FILENAME"
>lpd.lock</TT
>, must be placed in
<TT
CLASS="FILENAME"
>/var/spool/lpd</TT
>. It is suggested that the lock
file for each printer be placed in the spool directory for that
specific printer and named <TT
CLASS="FILENAME"
>lock</TT
>.</P
></DIV
><DIV
CLASS="SECTION"
><HR><H4
CLASS="SECTION"
><A
NAME="SPECIFICOPTIONS26"
>Specific Options</A
></H4
><DIV
CLASS="INFORMALTABLE"
><P
></P
><A
NAME="AEN2539"
></A
><TABLE
BORDER="0"
FRAME="void"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Directory</TH
><TH
>Description</TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="FILENAME"
>printer</TT
></TD
><TD
>Spools for a specific printer (optional)</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
></DIV
><DIV
CLASS="SECTION"
><HR><H3
CLASS="SECTION"
><A
NAME="VARSPOOLRWHORWHODFILES"
>/var/spool/rwho : Rwhod files (optional)</A
></H3
><DIV
CLASS="SECTION"
><H4
CLASS="SECTION"
><A
NAME="PURPOSE49"
>Purpose</A
></H4
><P
>This directory holds the <B
CLASS="COMMAND"
>rwhod</B
> information
for other systems on the local net.</P
><DIV
CLASS="TIP"
><P
></P
><TABLE
CLASS="TIP"
WIDTH="100%"
BORDER="0"
><TR
><TD
WIDTH="25"
ALIGN="CENTER"
VALIGN="TOP"
><IMG
SRC="tip.gif"
HSPACE="5"
ALT="Tip"></TD
><TH
ALIGN="LEFT"
VALIGN="CENTER"
><B
>Rationale</B
></TH
></TR
><TR
><TD
> </TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
>Some BSD releases use <TT
CLASS="FILENAME"
>/var/rwho</TT
> for this
data; given its historical location in <TT
CLASS="FILENAME"
>/var/spool</TT
>
on other systems and its approximate fit to the definition of
`spooled' data, this location was deemed more appropriate.</P
></TD
></TR
></TABLE
></DIV
></DIV
></DIV
></DIV
><DIV
CLASS="SECTION"
><HR><H2
CLASS="SECTION"
><A
NAME="VARTMPTEMPORARYFILESPRESERVEDBETWEE"
>/var/tmp : Temporary files preserved between system reboots</A
></H2
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="PURPOSE50"
>Purpose</A
></H3
><P
>The <TT
CLASS="FILENAME"
>/var/tmp</TT
> directory is made available
for programs that require temporary files or directories that are
preserved between system reboots. Therefore, data stored in
<TT
CLASS="FILENAME"
>/var/tmp</TT
> is more persistent than data in
<TT
CLASS="FILENAME"
>/tmp</TT
>.</P
><P
>Files and directories located in <TT
CLASS="FILENAME"
>/var/tmp</TT
>
must not be deleted when the system is booted. Although data stored
in <TT
CLASS="FILENAME"
>/var/tmp</TT
> is typically deleted in a
site-specific manner, it is recommended that deletions occur at a less
frequent interval than <TT
CLASS="FILENAME"
>/tmp</TT
>.</P
></DIV
></DIV
><DIV
CLASS="SECTION"
><HR><H2
CLASS="SECTION"
><A
NAME="VARYPNETWORKINFORMATIONSERVICE"
>/var/yp : Network Information Service (NIS) database files (optional)</A
></H2
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="PURPOSE51"
>Purpose</A
></H3
><P
>Variable data for the Network Information Service (NIS),
formerly known as the Sun Yellow Pages (YP), must be placed in this
directory.</P
><DIV
CLASS="TIP"
><P
></P
><TABLE
CLASS="TIP"
WIDTH="100%"
BORDER="0"
><TR
><TD
WIDTH="25"
ALIGN="CENTER"
VALIGN="TOP"
><IMG
SRC="tip.gif"
HSPACE="5"
ALT="Tip"></TD
><TH
ALIGN="LEFT"
VALIGN="CENTER"
><B
>Rationale</B
></TH
></TR
><TR
><TD
> </TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
><TT
CLASS="FILENAME"
>/var/yp</TT
> is the standard directory for NIS
(YP) data and is almost exclusively used in NIS documentation and
systems.
<A
NAME="AEN2582"
HREF="#FTN.AEN2582"
><SPAN
CLASS="footnote"
>[44]</SPAN
></A
></P
></TD
></TR
></TABLE
></DIV
></DIV
></DIV
></DIV
><DIV
CLASS="CHAPTER"
><HR><H1
><A
NAME="OPERATINGSYSTEMSPECIFICANNEX"
></A
>Chapter 6. Operating System Specific Annex</H1
><P
>This section is for additional requirements and recommendations
that only apply to a specific operating system. The material in this
section should never conflict with the base standard.</P
><DIV
CLASS="SECTION"
><HR><H2
CLASS="SECTION"
><A
NAME="LINUX"
>Linux</A
></H2
><P
>This is the annex for the Linux operating system.</P
><DIV
CLASS="SECTION"
><HR><H3
CLASS="SECTION"
><A
NAME="ROOTDIRECTORY"
>/ : Root directory</A
></H3
><P
>On Linux systems, if the kernel is located in
<TT
CLASS="FILENAME"
>/</TT
>, we recommend using the names
<TT
CLASS="FILENAME"
>vmlinux</TT
> or <TT
CLASS="FILENAME"