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98 lines
4.0 KiB
XML
98 lines
4.0 KiB
XML
<sect2><title> </title><para> </para></sect2>
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<sect2>
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<title>Installation of Shadow Password Suite</title>
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<para>Before you install this package, you may want to have a look at
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the Shadow hint. It discusses how you can make your system more secure
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regarding passwords, such as how to enable the more secure MD5 passwords
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and how to get the most out of this Shadow package. The Shadow hint can
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be found at <ulink url="&hints-root;shadowpasswd_plus.txt"/>.</para>
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<para>Programs like login, shutdown, uptime, and others want to read
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from and to the /var/run/utmp, /var/log/btmp and /var/log/wtmp. These
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files contain information about who is currently logged in. They also
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contain information about when the conmputer was last booted and
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shutdown and a record of bas login attempts.</para>
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<para>Create these files with their proper permissions by running the
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following commands:</para>
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<para><screen><userinput>touch /var/run/utmp /var/log/{btmp,lastlog,wtmp} &&
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chmod 644 /var/run/utmp /var/log/{btmp,lastlog,wtmp}</userinput></screen></para>
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<para>Shadow hard-codes the path to the passwd binary within itself, but
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it does it the wrong way. If no passwd binary is present before
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installing Shadow, it (wrongly) assumes that it will be at /bin/passwd,
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but then installs its own in /usr/bin/passwd. This will lead to strange
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errors about not finding /bin/passwd. To fix workaround this bug in
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Shadow, we'll create a dummy passwd file so that it gets hardcoded in
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the right place:</para>
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<para><screen><userinput>touch /usr/bin/passwd</userinput></screen></para>
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<para>Prepare Shadow to be compiled:</para>
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<para><screen><userinput>./configure --prefix=/usr --libdir=/usr/lib \
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--enable-shared</userinput></screen></para>
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<para>Continue with compiling the package:</para>
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<para><screen><userinput>make</userinput></screen></para>
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<para>Install the package:</para>
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<para><screen><userinput>make install</userinput></screen></para>
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<para>Shadow uses two files to configure authentication settings for
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the system. Install those config files:</para>
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<para><screen><userinput>cp etc/{limits,login.access} /etc</userinput></screen></para>
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<para><filename class="directory">/var/spool/mail</filename> is the
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old location of the user mailboxes. The location that is used nowadays
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is /var/mail. Issue the following command to modify the mailbox
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location:</para>
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<para><screen><userinput>sed 's%/var/spool/mail%/var/mail%' \
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etc/login.defs.linux > /etc/login.defs</userinput></screen></para>
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<para>According to the manpage of <userinput>vipw</userinput>,
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a <userinput>vigr</userinput> symlink should exist. Because the
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shadow installation procedure doesn't create this symlink, it
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must be created manually:</para>
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<para><screen><userinput>ln -s vipw /usr/sbin/vigr</userinput></screen></para>
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<para>The <filename>vipw</filename> link is currently pointing
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to a non-existing file. Since this file isn't needed here, remove
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it:</para>
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<para><screen><userinput>rm /bin/vipw</userinput></screen></para>
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<para>Move the <userinput>sg</userinput> program to the
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<filename class="directory">/usr/bin</filename> directory:</para>
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<para><screen><userinput>mv /bin/sg /usr/bin</userinput></screen></para>
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<para>Move Shadow's dynamic libraries to a more appropriate location:</para>
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<para><screen><userinput>mv /usr/lib/lib{shadow,misc}.so.0* /lib</userinput></screen></para>
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<para>The libraries have been moved, but some packages expect to
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find them in them in the
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<filename class="directory">/usr/lib</filename> directory. To account
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for this, create the following symlinks:</para>
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<para><screen><userinput>ln -sf ../../lib/libshadow.so.0 /usr/lib/libshadow.so &&
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ln -sf ../../lib/libmisc.so.0 /usr/lib/libmisc.so</userinput></screen></para>
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<para>Sh-utils and Shadow Password Suite each install a unique
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<filename>groups</filename> program. If you wish, you may remove the
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<filename>groups</filename> program installed by the Shadow Password
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Suite:</para>
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<para><screen><userinput>rm /bin/groups</userinput></screen></para>
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</sect2>
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