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Editorial review of intro to Terminals.

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Sponsored by:	iXsystems
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Dru Lavigne 2014-05-06 19:45:12 +00:00
parent c337daf9dd
commit b7ea8fe039
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=44779
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62
en_US.ISO8859-1/books/handbook/serialcomms/chapter.xml
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@ -619,18 +619,20 @@
</sect1>
<sect1 xml:id="term">
<!--
<sect1info>
<info>
<title>Terminals</title>
<authorgroup>
<author>
<personname>
<firstname>Sean</firstname>
<surname>Kelly</surname>
<contrib>Contributed by in July 1996</contrib>
</personname>
<contrib>Contributed by </contrib>
<!--in July 1996 -->
</author>
</authorgroup>
</sect1info>
-->
<title>Terminals</title>
</info>
<indexterm><primary>terminals</primary></indexterm>
@ -653,8 +655,8 @@
<para>Many terminals can be attached to a &os; system. An older
spare computer can be used as a terminal wired into a more
powerful computer running &os;. This can turn what might
otherwise be a single-user computer into a powerful multiple
user system.</para>
otherwise be a single-user computer into a powerful
multiple-user system.</para>
<para>&os; supports three types of terminals:</para>
@ -666,9 +668,8 @@
to computers over serial lines. They are called
<quote>dumb</quote> because they have only enough
computational power to display, send, and receive text.
No programs can be run on these devices. Dumb terminals
connect to a computer that has all the power to run text
editors, compilers, email, games, and so forth.</para>
No programs can be run on these devices. Instead, dumb terminals
connect to a computer that runs the needed programs.</para>
<para>There are hundreds of kinds of dumb terminals made
by many manufacturers, and just about any kind will work
@ -685,11 +686,11 @@
<varlistentry>
<term>Computers Acting as Terminals</term>
<listitem>
<para>If a dumb terminal has just enough ability to
<para>Since a dumb terminal has just enough ability to
display, send, and receive text, any spare computer can
be a dumb terminal. All that is needed is the proper
cable and some <emphasis>terminal
emulation</emphasis> software to run on the
cable and some <firstterm>terminal
emulation</firstterm> software to run on the
computer.</para>
<para>This configuration can be useful. For example, if one
@ -702,29 +703,24 @@
&os; that can be used to work through a serial connection:
&man.cu.1; and &man.tip.1;.</para>
<para>To connect from a client system that runs &os; to the
serial connection of another system, use:</para>
<para>For example, to connect from a client system that runs &os; to the
serial connection of another system:</para>
<screen>&prompt.root; <userinput>cu -l <replaceable>serial-port-device</replaceable></userinput></screen>
<para>Where <quote>serial-port-device</quote> is the name of
a special device file denoting a serial port on the
system. These device files are called
<filename>/dev/cuau<replaceable>N</replaceable></filename>.</para>
<para>The <quote>N</quote>-part of a device name is the
serial port number.</para>
<note>
<para>Note that device numbers in &os; start from zero and
not one. This means that <filename>COM1</filename>
<para>Replace <replaceable>serial-port-device</replaceable> with the device name of
the connected serial port. These device files are called
<filename>/dev/cuau<replaceable>N</replaceable></filename>
on &os; versions 8.x and lower and
<filename>/dev/cuad<replaceable>N</replaceable></filename>
on &os; versions 9.x and higher. In either case,
<replaceable>N</replaceable> is the
serial port number, starting from zero.
This means that <filename>COM1</filename>
is <filename>/dev/cuau0</filename> in &os;.</para>
</note>
<note>
<para>Some people prefer to use other programs available
<para>Additional programs are available
through the Ports Collection, such as <package>comms/minicom</package>.</para>
</note>
</listitem>
</varlistentry>
@ -735,9 +731,9 @@
terminal available. Instead of connecting to a serial
port, they usually connect to a network like Ethernet.
Instead of being relegated to text-only applications, they
can display any X application.</para>
can display any <application>&xorg;</application> application.</para>
<para>This chapter does <emphasis>not</emphasis> cover the
<para>This chapter does not cover the
setup, configuration, or use of X terminals.</para>
</listitem>
</varlistentry>