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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2388 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
53 lines
1.6 KiB
XML
53 lines
1.6 KiB
XML
<sect2><title> </title><para> </para></sect2>
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<sect2>
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<title>Installation of Ed</title>
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<note><para>Ed isn't something which many people use. It's installed here
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because it can be used by the patch program if you encounter an ed-based patch
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file. This happens rarely because diff-based patches are preferred these
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days.</para></note>
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<para>This package requires its patch to be applied before you can
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install it.</para>
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<para><screen><userinput>
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patch -Np1 -i ../ed-&ed-patch-version;.patch
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</userinput></screen></para>
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<para>Prepare Ed to be compiled:</para>
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<para><screen><userinput>
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./configure --prefix=/usr</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>And finish off installing the package:</para>
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<para><screen><userinput>make install</userinput></screen></para>
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<para>Move the Ed binaries to the root partition.</para>
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<para><screen><userinput>mv /usr/bin/{ed,red} /bin
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</userinput></screen></para>
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</sect2>
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<sect2>
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<title>Command explanations</title>
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<para><userinput>patch -Np1 -i ../ed-&ed-version;.patch:</userinput> This
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patch fixes a symlink vulnerability in ed. The ed executable creates files
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in /tmp with predictable names. By using various symlink attacks, it is
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possible to have ed write to files it should not, change the permissions
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of files, etc.</para>
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<para><userinput>mv /usr/bin/{ed,red} /bin:</userinput>
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The Ed binaries are moved to the /bin directory so they may be used in
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the event that the /usr partition is unavailable.</para>
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</sect2>
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