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>Special configuration in /etc/inittab</TITLE
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><H1
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><A
NAME="AEN1852"
>Special configuration in <TT
CLASS="FILENAME"
>/etc/inittab</TT
></A
></H1
><P
>The <TT
CLASS="FILENAME"
>/etc/inittab</TT
> has some special
features that allow <B
CLASS="COMMAND"
>init</B
> to react to special
circumstances. These special features are marked by special
keywords in the third field. Some examples:
<DIV
CLASS="GLOSSLIST"
><DL
><DT
><B
><TT
CLASS="LITERAL"
>powerwait</TT
></B
></DT
><DD
><P
> Allows <B
CLASS="COMMAND"
>init</B
> to shut the system
down, when the power fails. This assumes the use of
a UPS, and software that watches the UPS and informs
<B
CLASS="COMMAND"
>init</B
> that the power is off.
</P
></DD
><DT
><B
><TT
CLASS="LITERAL"
>ctrlaltdel</TT
></B
></DT
><DD
><P
> Allows <B
CLASS="COMMAND"
>init</B
> to reboot the system, when
the user presses ctrl-alt-del on the console keyboard.
Note that the system administrator can configure the
reaction to ctrl-alt-del to be something else instead,
e.g., to be ignored, if the system is in a public
location. (Or to start <B
CLASS="COMMAND"
>nethack</B
>.)
</P
></DD
><DT
><B
><TT
CLASS="LITERAL"
>sysinit</TT
></B
></DT
><DD
><P
> Command to be run when the system is booted. This command
usually cleans up <TT
CLASS="FILENAME"
>/tmp</TT
>, for example.
</P
></DD
></DL
></DIV
>
The list above is not exhaustive. See your
<TT
CLASS="FILENAME"
>inittab</TT
> manual page for all possibilities,
and for details on how to use the above ones. </P
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