LDP/LDP/retired/LFS/chapter06/create-utmp.xml

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<sect2>
<title>Creating the /var/run/utmp, /var/log/wtmp and /var/log/btmp files</title>
<para>Programs like login, shutdown, uptime and others want to read from and
write to the /var/run/utmp, /var/log/btmp and /var/log/wtmp. These files contain
information about who is currently logged in. They also contain information
on when the computer was last booted and shutdown and a record of the
bad login attempts.</para>
<para>Create these files with their proper permissions by running the
following commands:</para>
<screen><userinput>touch /var/run/utmp /var/log/{btmp,lastlog,wtmp} &amp;&amp;
chmod 644 /var/run/utmp /var/log/{btmp,lastlog,wtmp}</userinput></screen>
</sect2>