236 lines
4.2 KiB
HTML
236 lines
4.2 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>Newsreader Configuration</TITLE
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.57"><LINK
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TITLE="Managing INN: The ctlinnd Command"
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HREF="x19030.html"><LINK
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TITLE="tin Configuration"
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>Linux Network Administrators Guide</TH
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><H1
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><A
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NAME="X-087-2-NEWSREADERS"
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>Chapter 24. Newsreader Configuration</A
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></H1
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><DIV
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CLASS="TOC"
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><DL
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><DT
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><B
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>Table of Contents</B
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></DT
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><DT
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>24.1. <A
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HREF="x-087-2-newsreaders.tin.html"
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>tin Configuration</A
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></DT
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><DT
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>24.2. <A
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HREF="x-087-2-newsreaders.trn.html"
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>trn Configuration</A
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></DT
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><DT
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>24.3. <A
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HREF="x-087-2-newsreaders.nn.html"
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>nn Configuration</A
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></DT
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></DL
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></DIV
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><P
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>A <B
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CLASS="COMMAND"
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>newsreader</B
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> is a program that users invoke to view,
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store, and create news articles. Several newsreaders have been ported to
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Linux. We will describe the basic setup for the three most popular
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newsreaders: <B
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CLASS="COMMAND"
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>tin</B
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>, <B
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CLASS="COMMAND"
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>trn</B
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>, and <B
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CLASS="COMMAND"
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>nn</B
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>.</P
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><P
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>One of the most effective newsreaders is:
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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>$ <TT
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CLASS="USERINPUT"
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><B
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>find /var/spool/news -name '[0-9]*' -exec cat {} \; | more</B
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></TT
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></PRE
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></TD
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></TR
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></TABLE
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></P
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><P
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>This is the way Unix die-hards read their news.</P
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><P
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>Most newsreaders, however, are much more sophisticated. They usually offer
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a full-screen interface with separate levels for displaying all groups the
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user has subscribed to, an overview of all articles in each group, and
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individual articles. Many web browsers double as newsreaders, but if you want
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to use a standalone newsreader, this chapter explains how to configure two
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classic ones: <B
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CLASS="COMMAND"
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>trn</B
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> and <B
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CLASS="COMMAND"
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>nn</B
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>.</P
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><P
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>At the newsgroup level, most newsreaders display a list of articles,
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showing their subject lines and authors. In big groups, it is difficult
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for the user to keep track of articles relating to each other, although
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it is possible to identify responses to earlier articles.</P
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><P
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>
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A response usually repeats the original article's subject, prepending it
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with <TT
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CLASS="LITERAL"
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>Re:</TT
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>. Additionally, the <TT
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CLASS="LITERAL"
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>References:</TT
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>
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header line should include the message ID of the article on which the
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response is directly following up. Sorting articles by these two criteria
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generates small clusters (in fact, trees) of articles, which are called
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<I
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CLASS="EMPHASIS"
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>threads</I
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>. One of the tasks of writing a newsreader is
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devising an efficient scheme of threading, because the time required for this
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is proportional to the square of the number of articles.</P
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><P
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>We will not go into how the user interfaces are built here. All newsreaders
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currently available for Linux have a good help function; please refer to it
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for more details.</P
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><P
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>In the following sections, we will deal only with administrative tasks. Most of
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these relate to the creation of threads databases and accounting.</P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="x19030.html"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="x-087-2-newsreaders.tin.html"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
|
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ALIGN="left"
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VALIGN="top"
|
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>Managing INN: The ctlinnd Command</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>tin Configuration</TD
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></TR
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> |