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> <channel><title>nixCraft &#187; OpenBSD</title> <atom:link href="http://www.cyberciti.biz/tips/category/openbsd/feed" rel="self" type="application/rss+xml" /><link>http://www.cyberciti.biz/tips</link> <description>This is a Linux sys admin journal by Vivek about sys admin work, Linux tips &#38; tricks, hacks, news and more.</description> <lastBuildDate>Wed, 24 Apr 2013 18:50:55 +0000</lastBuildDate> <language>en-US</language> <sy:updatePeriod>hourly</sy:updatePeriod> <sy:updateFrequency>1</sy:updateFrequency> <generator>http://wordpress.org/?v=3.5.1</generator> <item><title>30 Best Sources For Linux / *BSD / Unix Documentation On the Web</title><link>http://www.cyberciti.biz/tips/linux-unix-bsd-documentations.html</link> <comments>http://www.cyberciti.biz/tips/linux-unix-bsd-documentations.html#comments</comments> <pubDate>Wed, 21 Dec 2011 20:11:40 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Debian Linux]]></category> <category><![CDATA[FreeBSD]]></category> <category><![CDATA[HP-UX]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[Linux distribution]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[CentOS]]></category> <category><![CDATA[dennis ritchie]]></category> <category><![CDATA[enterprise operating system]]></category> <category><![CDATA[hpc]]></category> <category><![CDATA[Learn CentOS]]></category> <category><![CDATA[Learn Debian]]></category> <category><![CDATA[Learn FreeBSD]]></category> <category><![CDATA[Learn Linux]]></category> <category><![CDATA[Learn OpenBSD]]></category> <category><![CDATA[Learn Ubuntu]]></category> <category><![CDATA[linux community]]></category> <category><![CDATA[linux users]]></category> <category><![CDATA[manpages]]></category> <category><![CDATA[source packages]]></category> <category><![CDATA[Sys admin]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=8323</guid> <description><![CDATA[<span
class="drop_cap">M</span>an pages are written by sys-admin and developers for IT techs, and are intended more as a reference than as a how to. Man pages are very useful for people who are already familiar with Linux, Unix, and BSD operating systems. Use man pages when you just need to know the syntax for particular commands or configuration file, but they are not helpful for new Linux users. Man pages are not good for learning something new for the first time. Here are thirty best documentation sites on the web for learning Linux and Unix like operating systems.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/linux-unix-bsd-documentations.html/feed</wfw:commentRss> <slash:comments>30</slash:comments> </item> <item><title>HowTo: Use OpenBSD In the Corporate Environment</title><link>http://www.cyberciti.biz/tips/howto-use-openbsd-in-the-corporate-environment.html</link> <comments>http://www.cyberciti.biz/tips/howto-use-openbsd-in-the-corporate-environment.html#comments</comments> <pubDate>Wed, 20 Apr 2011 12:38:35 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[aquarium]]></category> <category><![CDATA[corporate environment]]></category> <category><![CDATA[desktop computers]]></category> <category><![CDATA[firewall servers]]></category> <category><![CDATA[fortune 500 companies]]></category> <category><![CDATA[high security]]></category> <category><![CDATA[job]]></category> <category><![CDATA[reputation]]></category> <category><![CDATA[workstation]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=7763</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/openbsd' title='See all OpenBSD related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/openbsd_logo_sm.png' border='0' /></a></div> <span
class="drop_cap">O</span>penBSD has a reputation for high security and difficult operating systems for new user. But, some orginsations are using OpenBSD for everything including firewall, servers and desktop computers. This is quite impressive, from the article:<blockquote>So our paid job is hacking on and deploying, maintaining, supporting... OpenBSD installations. We are also required to hack on things that can be merged back into OpenBSD itself and when it's not possible, then we change what we did so that it can be. Of course some developments are very specific to what we do and have no place in the project's CVS tree.
So, amongst other services, we set up and maintain several 100% OpenBSD-based infrastructures (going from the entry site firewall to the secretary's workstation) and this is what I'm going to talk about here.
As a side note, it is important to know that we are working exclusively for Fortune 500 companies (each operating in totally different and unrelated sectors).</blockquote> Read more: <a
href="http://undeadly.org/cgi?action=article&#038;sid=20110420080633">A Puffy in the corporate aquarium</a>.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/howto-use-openbsd-in-the-corporate-environment.html/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Download of the day: OpenBSD 4.6 CD ISO Images</title><link>http://www.cyberciti.biz/tips/download-openbsd-4-6-cd-iso-images.html</link> <comments>http://www.cyberciti.biz/tips/download-openbsd-4-6-cd-iso-images.html#comments</comments> <pubDate>Mon, 19 Oct 2009 06:17:27 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Download of the day]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[cd iso]]></category> <category><![CDATA[daemons]]></category> <category><![CDATA[download openbsd]]></category> <category><![CDATA[download openbsd iso]]></category> <category><![CDATA[FTP Server]]></category> <category><![CDATA[Gnome]]></category> <category><![CDATA[iso images]]></category> <category><![CDATA[kde 3]]></category> <category><![CDATA[mirror ftp]]></category> <category><![CDATA[mirror list]]></category> <category><![CDATA[mozilla firefox]]></category> <category><![CDATA[new release]]></category> <category><![CDATA[open bsd download]]></category> <category><![CDATA[open source code]]></category> <category><![CDATA[openbsd download]]></category> <category><![CDATA[openbsd download iso]]></category> <category><![CDATA[openbsd iso]]></category> <category><![CDATA[openbsd iso download]]></category> <category><![CDATA[package tools]]></category> <category><![CDATA[privilege]]></category> <category><![CDATA[server usa]]></category> <category><![CDATA[software licensing]]></category> <category><![CDATA[software raid]]></category> <category><![CDATA[tcp stack]]></category> <category><![CDATA[thunderbird 2]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=5814</guid> <description><![CDATA[<div
style="float:right;margin-top:0px;margin-left:5px;"><a
title="See all OpenBSD related tips/articles" href="http://www.cyberciti.biz/tips/category/openbsd"><img
src="http://files.cyberciti.biz/cbzcache/3rdparty/openbsd_logo_sm.png" border="0" alt="" /></a></div> OpenBSD 4.6 has been released and available for download from the official website.  OpenBSD is well known for record of more than ten years with only two remote holes in the default install. The OpenBSD is widely known for the quality open source code and documentation, uncompromising position on software licensing, and focus on security and code <a
href="http://en.wikipedia.org/wiki/OpenBSD" target="_blank">correctness</a>.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/download-openbsd-4-6-cd-iso-images.html/feed</wfw:commentRss> <slash:comments>8</slash:comments> </item> <item><title>HowTo: Creating Firewall and Cluster Objects In Firewall Builder</title><link>http://www.cyberciti.biz/tips/creating-firewall-cluster-objects-in-firewall-builder.html</link> <comments>http://www.cyberciti.biz/tips/creating-firewall-cluster-objects-in-firewall-builder.html#comments</comments> <pubDate>Wed, 25 Mar 2009 19:44:25 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Iptables]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[Security]]></category> <category><![CDATA[changing ip address]]></category> <category><![CDATA[Firewall Builder]]></category> <category><![CDATA[firewall configuration]]></category> <category><![CDATA[firewall policy]]></category> <category><![CDATA[host os]]></category> <category><![CDATA[interface]]></category> <category><![CDATA[menu object]]></category> <category><![CDATA[object web]]></category> <category><![CDATA[web server]]></category> <category><![CDATA[wizard]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=6521</guid> <description><![CDATA[Here I present an abbreviated explanation of the process of          creating firewall and cluster objects. More detailed          step-by-step guides are available in sections         <a
href="http://www.fwbuilder.org/4.0/docs/users_guide/firewall-object.html">"Firewall Object"</a> and <a
href="http://www.fwbuilder.org/4.0/docs/users_guide/cluster-object.html">"Cluster Object"</a> of                the Firewall Builder Users Guide.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/creating-firewall-cluster-objects-in-firewall-builder.html/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Firewall Builder: Generate The Web Server Firewall Cluster Running Linux or OpenBSD</title><link>http://www.cyberciti.biz/tips/firewall-builder4-webserver-cluster-tutorial.html</link> <comments>http://www.cyberciti.biz/tips/firewall-builder4-webserver-cluster-tutorial.html#comments</comments> <pubDate>Wed, 25 Mar 2009 19:42:48 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Iptables]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[Security]]></category> <category><![CDATA[carp]]></category> <category><![CDATA[Firewall Builder]]></category> <category><![CDATA[firewall configuration]]></category> <category><![CDATA[firewall policy]]></category> <category><![CDATA[heartbeat]]></category> <category><![CDATA[high availability]]></category> <category><![CDATA[ipv6 addresses]]></category> <category><![CDATA[pacemaker]]></category> <category><![CDATA[pf carp cluster]]></category> <category><![CDATA[pf carp firewall]]></category> <category><![CDATA[pf carp OpenBSD firewall]]></category> <category><![CDATA[virtual addresses]]></category> <category><![CDATA[virtual hosts]]></category> <category><![CDATA[virtual ip]]></category> <category><![CDATA[web server configuration]]></category> <category><![CDATA[web servers]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=6506</guid> <description><![CDATA[<div
style="float: right; margin-top: 0px; margin-left: 5px;"><a
title="See all Firewall related tips/articles" href="http://www.cyberciti.biz/tips/category/iptables"><img
class="size-full wp-image-6507" title="Firewall Builder Logo" src="http://files.cyberciti.biz/uploads/tips/2010/03/fwbuilder-logo.png" alt="Firewall Builder Logo" width="72" height="72" /></a></div> <span
class="drop_cap">T</span>his article continues mini-series started with the post <a
href="http://www.cyberciti.biz/tips/introduction-to-firewall-builder-4-0.html">Introduction to Firewall Builder 4.0</a>. This article is also available as a section in the "<a
href="http://www.fwbuilder.org/4.0/docs/users_guide/cookbook.html">Firewall Builder Cookbook</a>" chapter of <a
href="http://www.fwbuilder.org/4.0/docs/users_guide/">Firewall Builder Users Guide 4.0</a>.
Firewall Builder 4.0 is currently in beta testing phase. If you find it interesting after reading this post, please download and try it out. Source code archives, binary deb and rpm packages for popular Linux distributions and commercially distributed Windows and Mac OS X packages are available for download here.
In this post I demonstrate how Firewall Builder can be used to       generate firewall configuration for a clustered web server with       multiple virtual IP addresses. The firewall is running on each       web server in the cluster.  This example assumes the cluster is       built with heartbeat using "old" style configuration files, but       which high availability software is used to build the cluster is       not really essential. I start with the setup that consists of       two identical servers running Linux but in the end of the       article I am going to demonstrate how this configuration can be       converted to OpenBSD with CARP.<br
/><br
/> <em>This entry is part 1 of 4 in the series <a
href="http://www.cyberciti.biz/tips/series/linux-firewall-cluster-configuration">Linux Firewall Cluster Configuration</a> with Firewall Builder v4.</em>:<br
/><ul
class="serieslist-ul"><li
class="serieslist-li-current">Firewall Builder: Generate The Web Server Firewall Cluster Running Linux or OpenBSD</li><li
class="serieslist-li"><a
href="http://www.cyberciti.biz/tips/creating-firewall-cluster-objects-in-firewall-builder.html" title="HowTo: Creating Firewall and Cluster Objects In Firewall Builder">HowTo: Creating Firewall and Cluster Objects In Firewall Builder</a></li><li
class="serieslist-li"><a
href="http://www.cyberciti.biz/tips/linux-cluster-building-firewall-rules.html" title="Linux Building Rules For The Cluster With Firewall Builder">Linux Building Rules For The Cluster With Firewall Builder</a></li><li
class="serieslist-li"><a
href="http://www.cyberciti.biz/tips/openbsd-pf-firewall-builder-configuration.html" title="Firewall Builder: Convert Linux Iptables Configuration to OpenBSD and PF">Firewall Builder: Convert Linux Iptables Configuration to OpenBSD and PF</a></li></ul>]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/firewall-builder4-webserver-cluster-tutorial.html/feed</wfw:commentRss> <slash:comments>7</slash:comments> <enclosure
url="Explains how to use Firewall Builder 4 to create Linux Heartbeat or OpenBSD carp based failover web cluster." length="" type="" /> </item> <item><title>Firewall Builder: Convert Linux Iptables Configuration to OpenBSD and PF</title><link>http://www.cyberciti.biz/tips/openbsd-pf-firewall-builder-configuration.html</link> <comments>http://www.cyberciti.biz/tips/openbsd-pf-firewall-builder-configuration.html#comments</comments> <pubDate>Wed, 25 Mar 2009 19:28:34 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Iptables]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[Security]]></category> <category><![CDATA[carp]]></category> <category><![CDATA[cluster configuration]]></category> <category><![CDATA[heartbeat]]></category> <category><![CDATA[host os]]></category> <category><![CDATA[interface]]></category> <category><![CDATA[pf carp cluster]]></category> <category><![CDATA[pf carp firewall]]></category> <category><![CDATA[pf carp OpenBSD firewall]]></category> <category><![CDATA[protocol]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=6570</guid> <description><![CDATA[Lets see how much effort it is going to take to convert this         configuration to entirely different firewall platform - PF on         OpenBSD. There are different ways to do this. I could make a         copy of each member firewall (linux-test-1 and linux-test-2),         set platform and host OS in the copy to PF and OpenBSD and         then create new cluster object. This would be a sensible way         because it preserves old objects which helps to roll back in         case something does not work out. However, to make the         explanation shorter, I am going to make the changes in place         by modifying existing objects.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/openbsd-pf-firewall-builder-configuration.html/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>Linux Building Rules For The Cluster With Firewall Builder</title><link>http://www.cyberciti.biz/tips/linux-cluster-building-firewall-rules.html</link> <comments>http://www.cyberciti.biz/tips/linux-cluster-building-firewall-rules.html#comments</comments> <pubDate>Wed, 25 Mar 2009 19:28:10 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Iptables]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[Security]]></category> <category><![CDATA[algorithm]]></category> <category><![CDATA[bottom panel]]></category> <category><![CDATA[chains]]></category> <category><![CDATA[cluster configuration]]></category> <category><![CDATA[Firewall Builder]]></category> <category><![CDATA[firewall rules]]></category> <category><![CDATA[firewalls]]></category> <category><![CDATA[heartbeat]]></category> <category><![CDATA[input and output]]></category> <category><![CDATA[ip addresses]]></category> <category><![CDATA[iptables cluster]]></category> <category><![CDATA[iptables heartbeat firewall]]></category> <category><![CDATA[iptables Linux firewall]]></category> <category><![CDATA[iptables Linux heartbeat firewall]]></category> <category><![CDATA[nat rules]]></category> <category><![CDATA[rule set]]></category> <category><![CDATA[users guide]]></category> <category><![CDATA[virtual addresses]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=6553</guid> <description><![CDATA[Now that all objects are ready and heartbeat is configured on         the machines, we can move on and build some firewall         rules. Since this is a cluster configuration, all rules go         into the rule set objects that belong to the cluster rather         than its member firewalls.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/linux-cluster-building-firewall-rules.html/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>BASH Shell: For Loop File Names With Spaces</title><link>http://www.cyberciti.biz/tips/handling-filenames-with-spaces-in-bash.html</link> <comments>http://www.cyberciti.biz/tips/handling-filenames-with-spaces-in-bash.html#comments</comments> <pubDate>Tue, 09 Dec 2008 19:18:29 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[fedora linux]]></category> <category><![CDATA[File system]]></category> <category><![CDATA[FreeBSD]]></category> <category><![CDATA[Gentoo Linux]]></category> <category><![CDATA[Howto]]></category> <category><![CDATA[HP-UX]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[OS X]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Suse Linux]]></category> <category><![CDATA[Tips]]></category> <category><![CDATA[Troubleshooting]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[Windows]]></category> <category><![CDATA[$IFS]]></category> <category><![CDATA[array element]]></category> <category><![CDATA[file names]]></category> <category><![CDATA[find command]]></category> <category><![CDATA[for loop]]></category> <category><![CDATA[linux find command]]></category> <category><![CDATA[pipes]]></category> <category><![CDATA[read file names into array]]></category> <category><![CDATA[separators]]></category> <category><![CDATA[space character]]></category> <category><![CDATA[while loop]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=3878</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/shell-scripting' title='See all Bash/Shell scripting related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/terminal.png' border='0' /></a></div> <a
href="http://www.cyberciti.biz/faq/bash-for-loop/">BASH for loop</a> works nicely under UNIX / Linux / Windows and OS X while working on set of files. However, if you try to process a for loop on file name with spaces in them you are going to have some problem. for loop uses $IFS variable to determine what the field separators are. By default $IFS is set to the space character. There are multiple solutions to this problem.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/handling-filenames-with-spaces-in-bash.html/feed</wfw:commentRss> <slash:comments>56</slash:comments> </item> <item><title>Linux: Should You Use Twice the Amount of Ram as Swap Space?</title><link>http://www.cyberciti.biz/tips/linux-swap-space.html</link> <comments>http://www.cyberciti.biz/tips/linux-swap-space.html#comments</comments> <pubDate>Wed, 19 Nov 2008 08:50:49 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[data center]]></category> <category><![CDATA[Debian Linux]]></category> <category><![CDATA[fedora linux]]></category> <category><![CDATA[File system]]></category> <category><![CDATA[FreeBSD]]></category> <category><![CDATA[Gentoo Linux]]></category> <category><![CDATA[kernel]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[Linux desktop]]></category> <category><![CDATA[Linux laptop]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Solaris]]></category> <category><![CDATA[Storage]]></category> <category><![CDATA[Suse Linux]]></category> <category><![CDATA[Tuning]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[hard disk]]></category> <category><![CDATA[load balancing]]></category> <category><![CDATA[memory manager]]></category> <category><![CDATA[memory pages]]></category> <category><![CDATA[raid 10]]></category> <category><![CDATA[ram size]]></category> <category><![CDATA[swap files]]></category> <category><![CDATA[swap partition]]></category> <category><![CDATA[swap space]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=3586</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/file-system' title='See all File system related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/file-manager.png' border='0' /></a></div> Linux and other Unix-like operating systems use the term "<a
href="http://en.wikipedia.org/wiki/Paging">swap</a>" to describe both the act of moving memory pages between RAM and disk, and the region of a disk the pages are stored on. It is common to use a whole partition of a hard disk for swapping. However, with the 2.6 Linux kernel, swap files are just as fast as swap partitions. Now, many admins (both Windows and Linux/UNIX) follow an old rule of thumb that your swap partition should be twice the size of your main system RAM. Let us say I've 32GB RAM, should I set swap space to 64 GB? Is 64 GB of swap space really required? How big should your Linux / UNIX swap space be? ]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/linux-swap-space.html/feed</wfw:commentRss> <slash:comments>64</slash:comments> </item> <item><title>Top 10 Best Cheat Sheets and Tutorials for Linux / UNIX Commands</title><link>http://www.cyberciti.biz/tips/linux-unix-commands-cheat-sheets.html</link> <comments>http://www.cyberciti.biz/tips/linux-unix-commands-cheat-sheets.html#comments</comments> <pubDate>Wed, 05 Nov 2008 18:17:26 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[CentOS]]></category> <category><![CDATA[Debian Linux]]></category> <category><![CDATA[FreeBSD]]></category> <category><![CDATA[GNU/Open source]]></category> <category><![CDATA[HP-UX]]></category> <category><![CDATA[Links]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Solaris]]></category> <category><![CDATA[Sys admin]]></category> <category><![CDATA[Tips]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[alphabetical directory]]></category> <category><![CDATA[basic unix commands cheat sheet]]></category> <category><![CDATA[beginners guide]]></category> <category><![CDATA[bsd]]></category> <category><![CDATA[cheat sheet]]></category> <category><![CDATA[cheat sheet linux commands]]></category> <category><![CDATA[command line reference]]></category> <category><![CDATA[commands in linux]]></category> <category><![CDATA[concise explanations]]></category> <category><![CDATA[cut and paste]]></category> <category><![CDATA[desktop themes]]></category> <category><![CDATA[learning unix]]></category> <category><![CDATA[linux command line]]></category> <category><![CDATA[linux commands]]></category> <category><![CDATA[linux commands cheat sheet]]></category> <category><![CDATA[practical guide]]></category> <category><![CDATA[reference material]]></category> <category><![CDATA[rosetta stone unix commands]]></category> <category><![CDATA[scripting unix]]></category> <category><![CDATA[Shell scripting]]></category> <category><![CDATA[top linux command]]></category> <category><![CDATA[unix command]]></category> <category><![CDATA[unix commands cheat sheet]]></category> <category><![CDATA[unix guru]]></category> <category><![CDATA[unix linux]]></category> <category><![CDATA[unix shell]]></category> <category><![CDATA[unix tutorial]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=3380</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/shell-scripting' title='See all Bash/Shell scripting related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/terminal.png' border='0' /></a></div> <span
class="drop_cap">C</span>heat sheet act as a reference tool which provides cut and paste kind of commands to complete a specific task. I often recommend following set of best cheat sheets to students and IT professionals. It include Linux / UNIX command and shell scripting.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/linux-unix-commands-cheat-sheets.html/feed</wfw:commentRss> <slash:comments>25</slash:comments> </item> <item><title>pssh: Run Command On Multiple SSH Servers</title><link>http://www.cyberciti.biz/tips/parallel-ssh-execution.html</link> <comments>http://www.cyberciti.biz/tips/parallel-ssh-execution.html#comments</comments> <pubDate>Sat, 01 Nov 2008 19:44:16 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Debian Linux]]></category> <category><![CDATA[Download of the day]]></category> <category><![CDATA[GNU/Open source]]></category> <category><![CDATA[Howto]]></category> <category><![CDATA[HP-UX]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[Linux distribution]]></category> <category><![CDATA[Linux Log Management]]></category> <category><![CDATA[Linux login control]]></category> <category><![CDATA[Linux Scalability]]></category> <category><![CDATA[Networking]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[OS X]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[linux execute remote command]]></category> <category><![CDATA[linux run script other server]]></category> <category><![CDATA[multixterm]]></category> <category><![CDATA[pssh command]]></category> <category><![CDATA[remote invoke script on linux]]></category> <category><![CDATA[run command own script ssh]]></category> <category><![CDATA[run commands multiple ssh]]></category> <category><![CDATA[ssh multiple execution]]></category> <category><![CDATA[ssh run command on multiple servers]]></category> <category><![CDATA[ssh to execute command]]></category> <category><![CDATA[tentakel ubuntu]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=3414</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/shell-scripting' title='See all Bash/Shell scripting related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/terminal.png' border='0' /></a></div> I've already written about <a
href="http://www.cyberciti.biz/tips/execute-commands-on-multiple-linux-or-unix-servers-part-ii.html">tentakel tool</a> and <a
href="http://www.cyberciti.biz/tips/execute-commands-on-multiple-linux-or-unix-servers.html">shell script hack</a> to run a single command on multiple Linux / UNIX / BSD server.  This is useful to save time and run UNIX commands on multiple machines. Linux.com has published an article <a
href="http://www.linux.com/feature/151340">about a new tool called pssh</a>:<br
/><blockquote>If you want to increase your productivity with SSH, you can try a tool that lets you run commands on more than one remote machine at the same time. Parallel ssh, Cluster SSH, and ClusterIt let you specify commands in a single terminal window and send them to a collection of remote machines where they can be executed.</blockquote>]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/parallel-ssh-execution.html/feed</wfw:commentRss> <slash:comments>8</slash:comments> </item> <item><title>Download of the day: OpenBSD 4.4 CD ISO Images</title><link>http://www.cyberciti.biz/tips/download-openbsd-4-cd-iso-images.html</link> <comments>http://www.cyberciti.biz/tips/download-openbsd-4-cd-iso-images.html#comments</comments> <pubDate>Fri, 31 Oct 2008 19:20:04 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Download of the day]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[Security]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[cd iso]]></category> <category><![CDATA[chroot]]></category> <category><![CDATA[download openbsd]]></category> <category><![CDATA[download openbsd 4.4]]></category> <category><![CDATA[download openbsd 4.4 CD]]></category> <category><![CDATA[download openbsd 4.4 iso]]></category> <category><![CDATA[openbsd 4.4 download]]></category> <category><![CDATA[OpenBSD 4.4 dvd]]></category> <category><![CDATA[OpenBSD 4.4 dvd download]]></category> <category><![CDATA[OpenBSD 4.4 iso]]></category> <category><![CDATA[openbsd iso image]]></category> <category><![CDATA[robustness]]></category> <category><![CDATA[security tools]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=3353</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/openbsd' title='See all OpenBSD related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/openbsd_logo_sm.png' border='0' /></a></div> OpenBSD 4.4 has been released and available for download  (jump to <a
href="http://www.cyberciti.biz/tips/download-openbsd-4-cd-iso-images.html#dl">download link</a> ) from official project website. OpenBSD is often the first to add new security tools to make it harder to break, developers have also carefully read through the programming code to check for mistakes more than once. ]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/download-openbsd-4-cd-iso-images.html/feed</wfw:commentRss> <slash:comments>4</slash:comments> </item> <item><title>RAID 5 vs RAID 10: Recommended RAID For Safety and Performance</title><link>http://www.cyberciti.biz/tips/raid5-vs-raid-10-safety-performance.html</link> <comments>http://www.cyberciti.biz/tips/raid5-vs-raid-10-safety-performance.html#comments</comments> <pubDate>Wed, 22 Oct 2008 12:48:43 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[File system]]></category> <category><![CDATA[FreeBSD]]></category> <category><![CDATA[Hardware]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Storage]]></category> <category><![CDATA[Suse Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[Windows server]]></category> <category><![CDATA[data storage]]></category> <category><![CDATA[database servers]]></category> <category><![CDATA[disk mirroring]]></category> <category><![CDATA[fault tolerance]]></category> <category><![CDATA[hardware raid]]></category> <category><![CDATA[raid 0]]></category> <category><![CDATA[raid 10 explained]]></category> <category><![CDATA[raid 10 vs raid 5]]></category> <category><![CDATA[raid 5 array]]></category> <category><![CDATA[raid 5 vs raid 10]]></category> <category><![CDATA[raid arrays]]></category> <category><![CDATA[raid controllers]]></category> <category><![CDATA[raid level]]></category> <category><![CDATA[redundant array]]></category> <category><![CDATA[storage schemes]]></category> <category><![CDATA[virtualization]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=3155</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/file-system' title='See all File system related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/file-manager.png' border='0' /></a></div> <a
href="http://www.cyberciti.biz/faq/different-raid-levels/">A Redundant Array of Independent Drives</a> (or Disks), also known as Redundant Array of Inexpensive Drives (or Disks) (RAID) is an term for data storage schemes that divide and/or replicate data among multiple hard drives. RAID can be designed to provide increased data reliability or increased I/O performance, though one goal may compromise the other. There are 10 RAID level. But which one is recommended for data safety and performance considering that hard drives are commodity priced? ]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/raid5-vs-raid-10-safety-performance.html/feed</wfw:commentRss> <slash:comments>71</slash:comments> </item> <item><title>How to Transfer PuTTY Sessions To Another Windows Machine</title><link>http://www.cyberciti.biz/tips/putty-session.html</link> <comments>http://www.cyberciti.biz/tips/putty-session.html#comments</comments> <pubDate>Tue, 09 Sep 2008 11:11:20 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Networking]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[Windows]]></category> <category><![CDATA[Windows server]]></category> <category><![CDATA[windows vista]]></category> <category><![CDATA[confirmation message]]></category> <category><![CDATA[import menu]]></category> <category><![CDATA[laptop]]></category> <category><![CDATA[putty]]></category> <category><![CDATA[regedit command]]></category> <category><![CDATA[registry key]]></category> <category><![CDATA[sessions]]></category> <category><![CDATA[windows machine]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=2836</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/windows' title='See all Micro$oft related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/wine.png' border='0' /></a></div> PuTTY is a terminal emulator application which can act as a client for the SSH, Telnet, rlogin, and raw TCP computing protocols. You can use putty for remote login or to control your <a
href="http://www.cyberciti.biz/tips/replace-windows-vista-hyperterminal-with-putty.html">router connected via serial</a> devices. <br
/> By default PuTTY stores the session information in the registry on Windows machine. If you have several PuTTY sessions stored in one laptop and would like to transfer those sessions to another laptop, you need to transfer HKEY_CURRENT_USER\Software\SimonTatham registry key and value as explained below.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/putty-session.html/feed</wfw:commentRss> <slash:comments>11</slash:comments> </item> <item><title>Avoid OpenDNS Free DNS Service Like The Plague [ Updated ]</title><link>http://www.cyberciti.biz/tips/opendns-sucks.html</link> <comments>http://www.cyberciti.biz/tips/opendns-sucks.html#comments</comments> <pubDate>Mon, 08 Sep 2008 10:52:38 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Business]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[Linux desktop]]></category> <category><![CDATA[Networking]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[cache server]]></category> <category><![CDATA[dns cache]]></category> <category><![CDATA[dns lookup]]></category> <category><![CDATA[dns protocol]]></category> <category><![CDATA[domain server]]></category> <category><![CDATA[free dns service]]></category> <category><![CDATA[google search]]></category> <category><![CDATA[opendns]]></category> <category><![CDATA[search queries]]></category> <category><![CDATA[sponsored search results]]></category> <category><![CDATA[web browser users]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=2828</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/networking' title='See all Linux/UNIX networking related tips/articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/networking.png' border='0' /></a></div> I was a big fan of OpenDNS dns service, but recently I found few bad things about their offerings. I  strongly recommend to stay away from OpenDNS service. ]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/opendns-sucks.html/feed</wfw:commentRss> <slash:comments>26</slash:comments> </item> <item><title>shoes &#8211; A cross-platform Windowing Applikit</title><link>http://www.cyberciti.biz/tips/shoes-cross-platform-ruby-style-windowing.html</link> <comments>http://www.cyberciti.biz/tips/shoes-cross-platform-ruby-style-windowing.html#comments</comments> <pubDate>Sat, 16 Aug 2008 00:36:03 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[GNU/Open source]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[Linux desktop]]></category> <category><![CDATA[Open source coding]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[OS X]]></category> <category><![CDATA[package management]]></category> <category><![CDATA[programming]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[Windows]]></category> <category><![CDATA[windows vista]]></category> <category><![CDATA[apt-get command]]></category> <category><![CDATA[gtk]]></category> <category><![CDATA[libjpeg]]></category> <category><![CDATA[mac os x]]></category> <category><![CDATA[make command]]></category> <category><![CDATA[ruby]]></category> <category><![CDATA[toolkit]]></category> <category><![CDATA[windowing]]></category> <category><![CDATA[yum command]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=2658</guid> <description><![CDATA[<div
style='float:right;margin-top:0px;margin-left:5px;'><a
href='http://www.cyberciti.biz/tips/category/c-programming' title='See all UNIX/Linux Programming/Development related articles'><img
src='http://files.cyberciti.biz/cbzcache/3rdparty/programming-logo.png' border='0' /></a></div> Shoes is a very informal graphics and windowing toolkit. It's for making regular old apps that run on Windows, Mac OS X and Linux. It's a blend of my favorite things from the Web, some Ruby style, and a sprinkling of cross-platform widgets. Shoes uses Ruby as its interface language.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/shoes-cross-platform-ruby-style-windowing.html/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>Download Of The Day: OpenSSH 5.1</title><link>http://www.cyberciti.biz/tips/download-openssh-51-server.html</link> <comments>http://www.cyberciti.biz/tips/download-openssh-51-server.html#comments</comments> <pubDate>Tue, 22 Jul 2008 20:37:11 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Download of the day]]></category> <category><![CDATA[Networking]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[Security]]></category> <category><![CDATA[download openssh]]></category> <category><![CDATA[fingerprint]]></category> <category><![CDATA[keygen]]></category> <category><![CDATA[MaxSessions]]></category> <category><![CDATA[openssh]]></category> <category><![CDATA[protocol]]></category> <category><![CDATA[tcp]]></category> <category><![CDATA[tcp connection]]></category> <category><![CDATA[throughput]]></category> <category><![CDATA[visualisation]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=2481</guid> <description><![CDATA[OpenSSH server and client version 5.1 has just been released and available for download. ]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/download-openssh-51-server.html/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>Impact of the Debian OpenSSL Vulnerability On other Linux Distribution</title><link>http://www.cyberciti.biz/tips/impact-of-debian-openssl-vulnerability.html</link> <comments>http://www.cyberciti.biz/tips/impact-of-debian-openssl-vulnerability.html#comments</comments> <pubDate>Mon, 23 Jun 2008 10:04:28 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[CentOS]]></category> <category><![CDATA[Debian Linux]]></category> <category><![CDATA[Linux distribution]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[package management]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Security]]></category> <category><![CDATA[Security Alert]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[Windows]]></category> <category><![CDATA[Windows server]]></category> <category><![CDATA[windows vista]]></category> <category><![CDATA[cve-2008-0166]]></category> <category><![CDATA[debian]]></category> <category><![CDATA[FreeBSD]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[openssl]]></category> <category><![CDATA[openssl library]]></category> <category><![CDATA[openssl package]]></category> <category><![CDATA[random number generator]]></category> <category><![CDATA[rhel]]></category> <category><![CDATA[ubuntu]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=2402</guid> <description><![CDATA[Can bug present in the Debian OpenSSL packages affect Red Hat / FreeBSD / CentOS Linux UNIX / Windows workstation / server users?]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/impact-of-debian-openssl-vulnerability.html/feed</wfw:commentRss> <slash:comments>1</slash:comments> </item> <item><title>Mega Download Of The Day: FireFox Browser Final 3.0</title><link>http://www.cyberciti.biz/tips/download-firefox-browser-version-3.html</link> <comments>http://www.cyberciti.biz/tips/download-firefox-browser-version-3.html#comments</comments> <pubDate>Tue, 17 Jun 2008 13:08:43 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Download of the day]]></category> <category><![CDATA[Mozilla]]></category> <category><![CDATA[News]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[OS X]]></category> <category><![CDATA[package management]]></category> <category><![CDATA[RedHat/Fedora Linux]]></category> <category><![CDATA[Suse Linux]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[Windows]]></category> <category><![CDATA[Windows server]]></category> <category><![CDATA[windows vista]]></category> <category><![CDATA[download firebox]]></category> <category><![CDATA[download web browser]]></category> <category><![CDATA[firefox download]]></category> <category><![CDATA[firfox]]></category> <category><![CDATA[firfox download]]></category> <category><![CDATA[free browser]]></category> <category><![CDATA[internet browser]]></category> <category><![CDATA[mozila browser]]></category> <category><![CDATA[web browse]]></category> <category><![CDATA[web browser]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=2370</guid> <description><![CDATA[Firefox 3.0 has been released and the creators of Firefox 3.0 are aiming to set a world record for the most downloads in 24 hours.]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/download-firefox-browser-version-3.html/feed</wfw:commentRss> <slash:comments>13</slash:comments> </item> <item><title>Download Firefox 3 Release Candidate 1</title><link>http://www.cyberciti.biz/tips/download-install-linux-firefox3-rc1.html</link> <comments>http://www.cyberciti.biz/tips/download-install-linux-firefox3-rc1.html#comments</comments> <pubDate>Sat, 17 May 2008 13:54:15 +0000</pubDate> <dc:creator>nixCraft</dc:creator> <category><![CDATA[Linux desktop]]></category> <category><![CDATA[Mozilla]]></category> <category><![CDATA[OpenBSD]]></category> <category><![CDATA[OS X]]></category> <category><![CDATA[Ubuntu Linux]]></category> <category><![CDATA[UNIX]]></category> <category><![CDATA[Windows]]></category> <category><![CDATA[windows vista]]></category> <category><![CDATA[download firefox 3]]></category> <category><![CDATA[firebug]]></category> <category><![CDATA[gecko]]></category> <category><![CDATA[Linux]]></category> <category><![CDATA[performance]]></category> <category><![CDATA[rc1]]></category> <category><![CDATA[release candidate 1]]></category> <category><![CDATA[Update]]></category> <category><![CDATA[wget]]></category> <guid
isPermaLink="false">http://www.cyberciti.biz/tips/?p=2303</guid> <description><![CDATA[Firefox 3 Release Candidate 1 has been released and download it while it is hot!]]></description> <wfw:commentRss>http://www.cyberciti.biz/tips/download-install-linux-firefox3-rc1.html/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> </channel> </rss>