Fix redundancy. While here, correct usage of unix and tighten wording.

Sponsored by: Essen Devsummit Hackathon

en_US.ISO8859-1/books/handbook/basics/chapter.xml

@@ -3178,14 +3178,14 @@ Swap: 2048M Total, 2048M Free
       <para>Shell redirection is the action of sending the output or
 	the input of a command into another command or into a file.
 	To capture the output of the &man.ls.1; command, for example,
-	into a file, simply redirect the output:</para>
+	into a file, redirect the output:</para>
 
       <screen>&prompt.user; <userinput>ls &gt; directory_listing.txt</userinput></screen>
 
-      <para>The <filename>directory_listing.txt</filename> file will
+      <para>The directory contents will now be listed in
-	now contain the directory contents.  Some commands allow you
+	<filename>directory_listing.txt</filename>.  Some commands can
-	to read input in a similar one, such as &man.sort.1;.  To sort
+	be used to read input, such as &man.sort.1;.  To sort this
-	this listing, redirect the input:</para>
+	listing, redirect the input:</para>
 
       <screen>&prompt.user; <userinput>sort &lt; directory_listing.txt</userinput></screen>
 
@@ -3196,26 +3196,24 @@ Swap: 2048M Total, 2048M Free
       <screen>&prompt.user; <userinput>sort &lt; directory_listing.txt &gt; sorted.txt</userinput></screen>
 
       <para>In all of the previous examples, the commands are
-	performing redirection using file descriptors.  Every unix
+	performing redirection using file descriptors.  Every &unix;
-	system has file descriptors; however, here we will focus on
+	system has file descriptors, which include standard input
-	three, so named as Standard Input, Standard Output, and
+	(stdin), standard output (stdout), and standard error
-	Standard Error.  Each one has a purpose, where input could be
+	(stderr).  Each one has a purpose, where input could be a
-	a keyboard or a mouse, something that provides input.  Output
+	keyboard or a mouse, something that provides input.  Output
-	could be a screen or paper in a printer for example.  And
+	could be a screen or paper in a printer.  And error would be
-	error would be anything that is used for diagnostic or error
+	anything that is used for diagnostic or error messages.  All
-	messages.  All three are considered <acronym>I/O</acronym>
+	three are considered <acronym>I/O</acronym> based file
-	based file descriptors and sometimes considered
+	descriptors and sometimes considered streams.</para>
-	streams.</para>
 
-      <para>Through the use of these descriptors, short named stdin,
+      <para>Through the use of these descriptors, the shell allows
-	stdout, and stderr, the shell allows output and input to be
+	output and input to be passed around through various commands
-	passed around through various commands and redirected to or
+	and redirected to or from a file.  Another method of
-	from a file.  Another method of redirection is the pipe
+	redirection is the pipe operator.</para>
-	operator.</para>
 
       <para>The &unix; pipe operator, <quote>|</quote> allows the
-	output of one command to be directly passed, or directed to
+	output of one command to be directly passed or directed to
-	another program.  Basically a pipe will allow the standard
+	another program.  Basically, a pipe allows the standard
 	output of a command to be passed as standard input to another
 	command, for example:</para>