old-www/LDP/sag/html/single-user.html

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>Single user mode</TITLE
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>8.5. Single user mode</H1
><P
>The <B
CLASS="COMMAND"
>shutdown</B
> command can also be used
to bring the system down to single user mode, in which no one
can log in, but root can use the console. This is useful for
system administration tasks that can't be done while the system is
running normally.</P
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