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<TITLE>LinuxFocus Magazine, September 2001</TITLE>
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<H1>Welcome to the LinuxFocus September/October 2001
issue</H1>
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<BR>
<P><A href="http://www.eff.org/br/"><IMG src=
"../../common/images/coverSeptember2001.gif" width="112" height=
"76" alt="[Online Free Speech]" align="right" vspace="10" hspace=
"10"></A>
Democracy, government by the people? At least this is
what the Greek word originally meant but where are we today? For
the USA we should probably say that Democracy is where money rules.
It looks like the "right" to make profit becomes increasingly more
important than the freedom to exchange ideas and information. <A
href="http://freesklyarov.org/">Dmitry Sklyarov</A> is facing
charges higher than armed robbers and child molesters. What did he
do? He wrote a piece of software that had the potential to reduce
the profit of Adobe and other companies. The device is still legal
in most countries and was legal until one year ago in the US.<BR>
It would allow you to do with E-books what you can do today with
paper books in any print-shop around the corner: copy pages from a
book.<BR>
<BR>
Big corporations are managing to get laws in place that have the
potential to severely restrict everybody's freedom and allow a few
individuals to make enormous profits.<BR>
<BR>
Just a few centuries ago people, science and the whole society was
suffering because a few monarchs and dictators had everything and
could do anything. Are we heading back in that direction?<BR>
<BR>
How is it possible that laws which restrict the freedom to exchange
digital speech are being put in place?</P>
<UL>
<LI>It increases extremely the profit of very few individuals and
they are very eager to push such laws through.</LI>
<LI>Computers are fairly new and most people still can't relate
to thoughts written down as software and digital information and
speech.</LI>
</UL>
Speakup, it's time to make everybody aware of the damages that this
will do to the society and everybody's freedom. It is very likely
that you will not be making any profit on stricter copyright,
patent ... etc laws. <BR>
<BR>
<BR clear="all">
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<H2>LinuxFocus.org Articles</H2>
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<H4>Software Development</H4>
<UL>
<LI type="circle">
<IMG src="../../common/images/frame.gif" alt="point" align=
"middle"> <A href="article198.shtml">Avoiding security holes
when developing an application - Part 5: race conditions</A> ,
by Frédéric Raynal, Christophe Blaess, Christophe
Grenier<BR>
<BR>
This article focuses on problems related to multitasking and
exclusive access of resources.
</LI>
</UL>
<H4>UNIX Basics</H4>
<UL>
<LI type="circle">
<IMG src="../../common/images/frame.gif" alt="point" align=
"middle"> <A href="article216.shtml">Shell Programming</A> , by
Katja Socher and Guido Socher<BR>
<BR>
The shell has its own quite powerful programming language. This
article explains how to write shell programs also known as
shell scripts.
</LI>
</UL>
<H4>System Administration</H4>
<UL>
<LI type="circle">
<IMG src="../../common/images/frame.gif" alt="point" align=
"middle"> <A href="article214.shtml">Psionic Portsentry 1.1,
the defender of the ports</A> , by Georges Tarbouriech<BR>
<BR>
Portsentry is a Intrusion Detection System for monitoring
TCP/UDP ports.
</LI>
</UL>
<UL>
<LI type="circle">
<IMG src="../../common/images/frame.gif" alt="point" align=
"middle"> <A href="article215.shtml">E-mail over UUCP</A> , by
Guido Socher<BR>
<BR>
UUCP is an old protocol but it is very good to handle E-mail
over dialup connections.
</LI>
</UL>
<H4>Graphics</H4>
<UL>
<LI type="circle">
<IMG src="../../common/images/frame.gif" alt="point" align=
"middle"> <A href="article139.shtml">XMRM : Morphing with
Linux</A> , by Yves Ceccone<BR>
<BR>
XMRM (Multi Resolution Morphing for X) is a morphing program
that allows one to create an mpeg video based on the the
transformation from one image into another one.
</LI>
</UL>
<H4>Applications</H4>
<UL>
<LI type="circle">
<IMG src="../../common/images/frame.gif" alt="point" align=
"middle"> <A href="article213.shtml">Analyzing your internet
applications' log files</A> , by Egon Willighagen<BR>
<BR>
This article describes a new log file analyzer by LogReport.org : Lire.
</LI>
</UL>
<UL>
<LI type="circle">
<IMG src="../../common/images/frame.gif" alt="point" align=
"middle"> <A href="article206.shtml">Using XML and XSLT to
build LinuxFocus.org</A> , by Egon Willighagen<BR>
<BR>
This article describes a XML based database system
</LI>
</UL>
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<B><A href="http://www.linuxgazette.com"><FONT
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<ul>
<li><a href="http://www.linuxgazette.com/issue71/lg_mail71.html">The MailBag</a><br></li>
<li><a href="http://www.linuxgazette.com/issue71/lg_bytes71.html">News Bytes</a><br></li>
<li><a href="http://www.linuxgazette.com/issue71/lg_answer71.html">The Answer Gang</a><br></li>
<li><a href="http://www.linuxgazette.com/issue71/lg_tips71.html">More 2-Cent Tips</a><br></li>
<li><a href="http://www.linuxgazette.com/issue71/arndt.html">A Need for Documentation</a><br>By Matthias Arndt</li>
<li><a href="http://www.linuxgazette.com/issue71/joshi.html">Code Optimization Using the GNU C Compiler</a><br>By Rahul U Joshi</li>
<li><a href="http://www.linuxgazette.com/issue71/orr.html">The Foolish Things We Do With Our Computers</a><br>By Mike "Iron" Orr</li>
<li><a href="http://www.linuxgazette.com/issue71/qubism.html">Qubism</a><br>By Jon "Sir Flakey" Harsem</li>
<li><a href="http://www.linuxgazette.com/issue71/spiel.html">Numerical Workbenches, part III</a><br>By Christoph Spiel</li>
<li><a href="http://www.linuxgazette.com/issue71/lg_backpage71.html">The Back Page</a><br></li>
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<a name="tip"> </a>
<H4>The LinuxFocus Tip</H4>
<P>How to copy a whole tree of files and directories?<BR>
Apart from using a filemanager (like e.g mc, ...) you can use the
following commands. All of them copy the current directory ("."),
including subdirectories, into a destination directory:</P>
<UL>
<LI>cp -Rpv . /some/destdir<BR>
Disadvantage: It fails on special files such as the files in
/dev</LI>
<LI>find . -print | cpio -dump -V /some/destdir<BR>
Disadvantage: None.<BR>
You can even copy softlinks on directories including their
content if you use:<BR>
find . -follow -print | cpio -dump -V /some/destdir<BR>
To not copy files ending in ".bak" use egrep as a filter:<BR>
find . -follow -print | egrep -v "\.bak$" | cpio -dump -V
/some/destdir<BR>
</LI>
<LI>tar -cvf /tmp/t.tar .<BR>
cd /some/destdir<BR>
tar -xvf /tmp/t.tar<BR>
rm /tmp/t.tar<BR>
Disadvantage: A temporary file is created.</LI>
<LI>tar cf - . | (cd /some/destdir ; tar xf -)<BR>
or to a remote host:<BR>
tar cf - . | ssh host "(cd /some/destdir ; tar xf -)"<BR>
Disadvantage: It does not work if you use tcsh as a shell.</LI>
</UL>
All of the commands above "try" to preserve permissons and owners
where possible. Only root can make "perfect" copies of directory
trees where files belong to several people. <BR>
<BR>
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