source: postlfs/editors/ed.xml@ f5f7f9d

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
   "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY ed-download-http "http://ftp.gnu.org/pub/gnu/ed/ed-&ed-version;.tar.gz">
  <!ENTITY ed-download-ftp  "ftp://ftp.gnu.org/pub/gnu/ed/ed-&ed-version;.tar.gz">
  <!ENTITY ed-md5sum        "ddd57463774cae9b50e70cd51221281b">
  <!ENTITY ed-size          "182 KB">
  <!ENTITY ed-buildsize     "3.1 MB">
  <!ENTITY ed-time          "0.10 SBU">
]>

<sect1 id="ed" xreflabel="Ed-&ed-version;">
<sect1info>
<othername>$LastChangedBy$</othername>
<date>$Date$</date>
</sect1info>
<?dbhtml filename="ed.html"?>
<title>Ed-&ed-version;</title>
<indexterm zone="ed"><primary
sortas="a-Ed">Ed</primary></indexterm>


<sect2>
<title>Introduction to <application>Ed</application></title>

<para><application>Ed</application> is a line-oriented text editor. It
is used to create, display, modify and otherwise manipulate text files,
both interactively and via shell scripts. Ed isn't something which many
people use. It's described here because it can be used by the patch
program if you encounter an ed-based patch file. This happens rarely
because diff-based patches are preferred these days.</para>

<sect3><title>Package information</title>
<itemizedlist spacing="compact">
<listitem><para>Download (HTTP): 
<ulink url="&ed-download-http;"/></para></listitem>
<listitem><para>Download (FTP): 
<ulink url="&ed-download-ftp;"/></para></listitem>
<listitem><para>Download MD5 sum: &ed-md5sum;</para></listitem>
<listitem><para>Download size: &ed-size;</para></listitem>
<listitem><para>Estimated disk space required: 
&ed-buildsize;</para></listitem>
<listitem><para>Estimated build time: 
&ed-time;</para></listitem></itemizedlist>
</sect3>

<sect3><title>Additional downloads</title>
<itemizedlist spacing="compact">
<listitem><para>Required Patch: <ulink
url="&patch-root;/ed-&ed-version;-mkstemp-1.patch"/></para></listitem>
</itemizedlist></sect3>

</sect2>

<sect2>
<title>Installation of <application>Ed</application></title>

<para><application>Ed</application> normally uses the
<emphasis>mktemp</emphasis> function to create temporary files in
<filename class="directory">/tmp</filename>, but this function contains
a vulnerability (see the section on Temporary Files at
<ulink url="http://en.tldp.org/HOWTO/Secure-Programs-HOWTO/avoid-race.html"/>).
Apply the following patch to make <application>Ed</application> use
<emphasis>mkstemp</emphasis> instead, a secure way to create temporary
files:</para>

<screen><userinput><command>patch -Np1 -i ../ed-&ed-version;-mkstemp-1.patch</command></userinput></screen>

<para>Install <application>Ed</application> by running the following
commands:</para>

<screen><userinput><command>./configure --prefix=/usr --exec-prefix="" &amp;&amp;
make</command></userinput></screen>

<para>Now, as the root user:</para>

<screen><userinput role='root'><command>make install</command></userinput></screen>

</sect2>

<sect2>
<title>Command explanations</title>

<para><parameter>--exec-prefix=""</parameter>: This forces the programs
to be installed into the <filename class="directory">/bin</filename>
directory. Having the programs available there is useful in the event of
the <filename class="directory">/usr</filename> partition being
unavailable.</para>

</sect2>

<sect2>
<title>Contents</title>

<segmentedlist>
<segtitle>Installed Programs</segtitle>
<segtitle>Installed Libraries</segtitle>
<segtitle>Installed Directories</segtitle>
<seglistitem>
<seg>ed and red</seg>
<seg>None</seg>
<seg>None</seg>
</seglistitem>
</segmentedlist>

<variablelist>
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>

<varlistentry id="ed-prog">
<term><filename>ed</filename></term>
<listitem><para>is a line-oriented text editor.</para>
<indexterm zone="ed ed-prog">
<primary sortas="b-ed">ed</primary></indexterm>
</listitem>
</varlistentry>

<varlistentry id="red">
<term><filename>red</filename></term>
<listitem><para>is a restricted ed&mdash;it can only edit files in the
current directory and cannot execute shell commands.
</para>
<indexterm zone="ed red">
<primary sortas="b-red">red</primary></indexterm>
</listitem>
</varlistentry>

</variablelist>

</sect2>

</sect1>