1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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3 | <!ENTITY % general-entities SYSTEM "../general.ent">
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4 | %general-entities;
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5 | ]>
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6 | <sect1 id="ch-system-ed" xreflabel="Ed">
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7 | <title>Ed-&ed-version;</title>
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8 | <?dbhtml filename="ed.html"?>
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9 |
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10 | <indexterm zone="ch-system-ed"><primary sortas="a-Ed">Ed</primary></indexterm>
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11 |
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12 | <para>The Ed package contains a spartan line editor.</para>
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13 |
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14 | <screen>&buildtime; 0.1 SBU
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15 | &diskspace; 3.1 MB</screen>
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16 |
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17 | <para>Ed installation depends on: Bash, Binutils, Coreutils, Diffutils, GCC,
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18 | Glibc, Grep, Make, Sed.</para>
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19 |
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20 |
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21 |
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22 | <sect2>
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23 | <title>Installation of Ed</title>
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24 |
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25 | <note><para>Ed isn't something which many people use. It's installed here
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26 | because it can be used by the patch program if you encounter an ed-based patch
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27 | file. This happens rarely because diff-based patches are preferred these
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28 | days.</para></note>
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29 |
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30 | <para>Ed normally uses the <emphasis>mktemp</emphasis> function to create
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31 | temporary files in <filename class="directory">/tmp</filename>, but this
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32 | function contains a vulnerability (see the section on Temporary Files in <ulink
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33 | url="http://en.tldp.org/HOWTO/Secure-Programs-HOWTO/avoid-race.html"/>). Apply
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34 | the following patch to make Ed use <emphasis>mkstemp</emphasis> instead, a
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35 | secure way to create temporary files:</para>
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36 |
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37 | <screen><userinput>patch -Np1 -i ../ed-&ed-version;-mkstemp.patch</userinput></screen>
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38 |
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39 | <para>Now prepare Ed for compilation:</para>
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40 |
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41 | <screen><userinput>./configure --prefix=/usr --exec-prefix=""</userinput></screen>
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42 |
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43 | <para>The meaning of the configure option:</para>
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44 |
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45 | <itemizedlist>
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46 | <listitem><para><userinput>--exec-prefix=""</userinput>: This forces the
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47 | programs to be installed into the <filename>/bin</filename> directory. Having
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48 | the programs available there is useful in the event of the
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49 | <filename>/usr</filename> partition being unavailable.</para></listitem>
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50 | </itemizedlist>
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51 |
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52 | <para>Compile the package:</para>
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53 |
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54 | <screen><userinput>make</userinput></screen>
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55 |
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56 | <para>To test the results, issue:
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57 | <userinput>make check</userinput>.</para>
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58 |
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59 | <para>Install the package:</para>
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60 |
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61 | <screen><userinput>make install</userinput></screen>
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62 |
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63 | </sect2>
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64 |
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65 |
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66 | <sect2 id="contents-ed"><title>Contents of Ed</title>
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67 |
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68 | <para><emphasis>Installed programs</emphasis>: ed and red (link to ed)</para>
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69 |
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70 | </sect2>
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71 |
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72 |
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73 | <sect2><title>Short descriptions</title>
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74 |
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75 | <indexterm zone="ch-system-ed ed"><primary sortas="b-ed">ed</primary></indexterm>
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76 | <para id="ed"><command>ed</command> is a line-oriented text editor. It can be used
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77 | to create, display, modify and otherwise manipulate text files.</para>
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78 |
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79 | <indexterm zone="ch-system-ed red"><primary sortas="b-red">red</primary></indexterm>
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80 | <para id="red"><command>red</command> is a restricted ed -- it can only edit files
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81 | in the current directory and cannot execute shell commands.</para>
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82 |
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83 | </sect2>
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84 |
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85 |
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86 |
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87 | </sect1>
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