FelipeCruz - Felipe Cruz .com | Felipe Cruz dot com , Felipe Cruz Ferrero main website , linux articles , php articles , mysql articles , technical blogs and general amusement http://felipecruz.com/ Mon, 10 Dec 2007 03:30:16 +0100 FeedCreator 1.7.2 http://felipecruz.com/blog_manual-mail-test-via-telnet.php This article shows how to make a manual mail test via telnet so you can see the remote server response live and troubleshoot any issues you might be experiencing. Mon, 17 Sep 2007 21:46:20 +0100 http://felipecruz.com/blog_convert-pfx-file.php Here are some basic simple steps to convert a PFX file to a format that your apache server on linux will understand , you only need openssl installed on your server for this to work ok. Wed, 25 Jul 2007 18:25:09 +0100 http://felipecruz.com/blog_htaccess-redirect-example.php The following is an example of how to redirect your complete site to the domain name without the www or viceversa. Wed, 23 May 2007 23:12:30 +0100 http://felipecruz.com/blog_nmap-usage-for-newbies-part1.php This is an article from Corey Nachreiner i thought would be very usefull to add to my articles , the article can be very handy for those trying to find a way through nmap, a very powerfull networking tool Tue, 15 May 2007 19:06:00 +0100 http://felipecruz.com/blog_load-balance-round-robin-dns.php Creating a Load Balancing effect with DNS servers is easier than you might think. Maybe if you have ever heard of the term round robin algorythms you have an idea of what im talking about. Find out a detail article of load balancing using DNS servers like BIND. Mon, 29 Jan 2007 19:49:42 +0100 http://felipecruz.com/blog_using-tape-drive-linux.php Sometimes remembering the way to access your tape drive in linux aint that easy, follow this basic guide which has almost all the neccesary commands you might execute on your tape drive. Sat, 16 Sep 2006 15:30:37 +0100 http://felipecruz.com/blog_reset-root-password-linux.php Geeezzz ... did you forgot your root password from your linux box?, well perhaps is not the end of the world if you do have physicall access to your box, you can start it on single user mode and reset it. Dont know how? ... then read this article. Wed, 06 Sep 2006 05:11:00 +0100 http://felipecruz.com/blog_grub-customize-kernel.php A typical situation on RedHat EN 3 is that even though your server is a dual processor machine, the Grub loader will boot with the single processor kernel even though you have both installed, this is obviously very counter productive with remote reboots, learn how to fix this problem here. Mon, 28 Aug 2006 03:12:20 +0100 http://felipecruz.com/blog_awk-to-analyze-linux-unix-server-logs.php AWK is a neat tool that comes in most *nix OS environments, basically on this small article I show you how to use awk to analyze a log file like an access_log from apache or even a sendmail log file. This can be really usefull to analyze big log files and find in some cases, someone hammering your server with hyge traffic (DoS Attack) Wed, 26 Oct 2005 20:21:07 +0100 http://felipecruz.com/blog_ethernet-promiscuous-mode-linux.php What is exactly promiscuous mode? , what would it do on my network interface card and why would i need to use it? This small article will give you a brief description of promiscuous mode as well as basic and fast instructions on how to set your ethernet adapter card to work on this mode. Mon, 12 Sep 2005 16:30:37 +0100 http://felipecruz.com/blog_linux-unix-basic-commands.php The following are a list of the most basic, but must know commands for any serious linux / unix user, please take your time to read this brief but informative article on linux commands. Tue, 29 Nov 2005 04:06:25 +0100 http://felipecruz.com/blog_linux-defrag-fix-fragmentation.php Is there any need to "defragment" Linux partitions as there is in Windows/NT systems? Is this yet another reason why running a Linux server is better than NT, in that you don't really need to worry so much about fragmentation on Linux partitions? Tue, 10 Jan 2006 02:05:22 +0100 http://felipecruz.com/blog_change-hostname-linux.php The following simple instructions can help you change your linux box / server hostname with ease , the first option is permanent , option number two will change the host name but changes wont be reflected after a reboot. Check it out Thu, 22 Sep 2005 05:46:09 +0100 http://felipecruz.com/blog_date-time-command-linux.php I usually tend to forget the order of the parameters on the date command, is not a command you will use regularly, but definitely its a must know for any network administrator on a linux/unix environment. Check out this simple instructions: Tue, 01 Nov 2005 02:20:12 +0100 http://felipecruz.com/blog_disable-directory-listing-browsing-apache.php One of the "must do's" on setting a secure apache webserver environment is to disable directory browsing. As a default Apache will be compiled with this option enabled, but its always a good idea to get rid of this setting unless its really necessary. If you have some basic knowledge of vi editor follow this steps Fri, 28 Oct 2005 21:21:25 +0100 http://felipecruz.com/blog_pam-linux-authentication.php The plugabble authentication module is a very usefull external application to install and set different rules directly into your linux box without adding any special external devices into your network. This article covers an example of PAM Tue, 29 Nov 2005 04:13:59 +0100 http://felipecruz.com/blog_restricte-linux-users-to-their-home.php This is typical situation, you created users that were intended to stay in their /home environment, however they can read around and look all the server directories, here is how to solve this situation Tue, 29 Nov 2005 04:19:18 +0100 http://felipecruz.com/blog_add-remove-linux-services-graphical-interface.php Here is a simple way that linux provides to manage the services on the startup, mostly for those users that want a small graphical interface to manage this Tue, 29 Nov 2005 04:24:05 +0100 http://felipecruz.com/blog_bash-script-for-ftp-unix.php Have you been in the need of an automatic script that connects to a remote ftp server to copy some backups or something similar? There is no need to be a bash expert, the following simple example can give you the basics to have a fully functional ftp script on bash. Read More ... Tue, 06 Sep 2005 05:28:22 +0100 http://felipecruz.com/blog_execute-mssql-stored-procedure-asp.php This small example is based on ASP code , although i am not officially an asp fan ( php mostly ) I found its extremely easy to execute a stored procedure and pass a couple parameters using ASP. Thu, 22 Mar 2007 00:45:38 +0100 http://felipecruz.com/blog_high-iowait-times-may21.php I truly had (i hope) a hell of a time with tremendous high iotimes on a Redhat enterprise 3 server. Fri, 15 Apr 2005 17:02:29 +0100 http://felipecruz.com/blog_java-date-picker-swing.php Date pickers are essentials for any developer , wether you program in PHP , JAVA , C , .NET we always need to capture dates which usually later on are sent to a Database. I found a great option for JAVA Developers. Tue, 13 Mar 2007 05:07:15 +0100 http://felipecruz.com/blog_dos-attack-on-windows-servers.php This is an article sent by watchguard technologies about different tips or ways to harden windows servers in an event of a DOS attack. Personally im not an avid windows user, call me a */nix freak ... still the article is worth reading it, and for windows users ... a must! Mon, 24 Oct 2005 18:54:53 +0100 http://felipecruz.com/blog_solaris-and-redhat-linux-similarities.php What are the differences between Solaris and RedHat Linux? What are the similarities between the two operating systems at an administrative level? Tue, 10 Jan 2006 02:26:03 +0100 http://felipecruz.com/blog_curl-with-php.php I had never used CURL with PHP , but today I had to create a "multi-POST" script , initially I tried creating a middle man page that would make the POST to the final script but it didnt worked that good, then I found the following article ... simply awesome , and worked like a charm: Thu, 15 Feb 2007 01:46:08 +0100 http://felipecruz.com/blog_connect-oracle10g-and-apache.php So, you followed all the steps to compile apache , php and oracle 10g but still PHP is not talking to Oracle ? What a drag right ? Here you will find a possible solution that actually found me in the middle of lots of frustration, I hope this article works as a good release (Ive been there boys) Sat, 23 Jul 2005 02:03:47 +0100 http://felipecruz.com/blog_webhosting-costa-rica.php Its quite fun to say that I consider myself one of the pioneers of the webhosting business in Costa Rica. Yes ... Costa Rica, this small country down in central america has been a nice gateway of different e-business related companies and ventures for the last few years. Thu, 02 Jun 2005 04:46:03 +0100 http://felipecruz.com/blog_ie-cumulative-patch.php Today, Microsoft released a security bulletin describing a critical vulnerability in Internet Explorer. By tricking one of your users into visiting a maliciously-crafted Web page or into opening a maliciously-crafted HTML e-mail, an attacker could exploit this vulnerability to execute code on that user's computer, with that user's privileges. Tue, 11 Oct 2005 23:02:12 +0100 http://felipecruz.com/blog_usage-of-ssh.php The following article gives a more detailed description of the different features you can enable on a linux ssh enabled box. Learn how to port forward, generate ssh keys and more. Thu, 02 Feb 2006 04:58:53 +0100 http://felipecruz.com/blog_google-page-rank-checksum-php.php Alex Stapleton figured how to calculate a site checksum to grab a page google page rank, based on this you can get the page rank by posting the checksum value as shown on this article. PHP Code also available. Tue, 30 Jan 2007 05:28:48 +0100 http://felipecruz.com/blog_new-user-mysql.php Perhaps you are a little lost on certain MySQL basics like user creation , beleive me , it happened to me a lot , I always forgot the damn command to create a new user on MySQL server. Its easy ... follow these basic steps Fri, 02 Mar 2007 06:13:41 +0100 http://felipecruz.com/blog_new-oracle-section.php Just started my new section dedicated to Oracle, it was definitely something needed now that Oracle decided to join with php (my preferred language). Tue, 14 Jun 2005 04:11:44 +0100 http://felipecruz.com/blog_no-seo-shortcuts-phpbeast-is-coming.php Working on the internet for the past 6 to 7 years and comparing the old days within the search engines world and the new 'era' of SEO working related jobs just makes me realize the following phrase is the only truth nowadays: NO MORE SHORTCUTS IN SEO. Sat, 27 Aug 2005 18:18:36 +0100 http://felipecruz.com/blog_disable-print-in-browser-with-css.php Since less than a month ago I started a slow learning curve on the proper use of CSS (cascading style sheets) , the best way for me to keep track of all the small new things im learning was to create a new section dedicated to CSS. Hopefully by the end of the year (2005) ill be a CSS Guru, so stay tuned. I started with a small tip to disable printing in a browser. Sat, 17 Sep 2005 20:19:58 +0100 http://felipecruz.com/blog_php-xml-xslt-trying-to-clone-an-uncloneable-object-of-class.php In the recent days, one of my programmers had to deploy an small application that reads an xslt template and parses it with the content of an xml feed to generate some sporting event results. We decided to use PHP (as usual), and while trying to generate the content we got the error: Trying to clone an uncloneable object of class %s. Read more to find the fix Tue, 27 Sep 2005 21:44:01 +0100 http://felipecruz.com/blog_old-mysql-client-php-problem-with-new-mysql-versions.php Perhaps you will face the problem I recently found in the middle of a migration, I migrated a huge database from MySQL 4.0.20 to new 4.1 version , the webserver talking to this new database server had PHP compiled with MySQL 4.0.20, guess what happened ?? , PHP with the old MySQL client was not talking to the new MySQL server, read why & the fix here ... Fri, 14 Oct 2005 08:09:14 +0100 http://felipecruz.com/blog_change-gateway-linux-unix.php Changing the gateway on a linux / unix server or machine without using a graphical interface is a very common task for network administrators, check the solution here. Thu, 30 Mar 2006 00:54:01 +0100 http://felipecruz.com/blog_change-gateway-route-on-solaris.php Confused between the differences between solaris and linux? Well, me too sometimes, this is the way to change the default route on a solaris server or box. Very usefull information ! Mon, 03 Apr 2006 05:32:44 +0100 http://felipecruz.com/blog_rumi-odes-833.php Esta es una oda de RUMI , un poema sobre la muerte y nuestro paso por esta vida, se hizo famosa por el episodio de la quinta temporada de six feet under sobre la muerte de \"NATE\" , aqui se las dejo , es muy profunda Tue, 24 Apr 2007 06:23:38 +0100 http://felipecruz.com/blog_njni10-oracle-10g-on-macos-x.php Are you one of those that has been suffering from this error: UnsatisfiedLinkError exception loading native library: njni10 , while installing oracle 10G client or oracle server on macosx ? , well , you wont beleive how simple the solution is ... Thu, 30 Jun 2005 20:35:43 +0100 http://felipecruz.com/blog_iowait-times-update.php This is an update on my last situation on high iowait times on my linux RedHat EN 3 Server. Needless to say even though the change i describe on this article worked in my case , with my specific hardware ... its not a bullet proof solution since i know IOWAIT problems vary a lot in relation to hardware, but it may help. Fri, 27 May 2005 22:51:35 +0100 http://felipecruz.com/blog_list-mysql-databases.php Lately im trying to document as many 'quick tips' as i can, and this is a small command that I actually forgot while running some database checks the other day, as simple as it is I had to 'google' it to remember, so i might as well document it right here no ?? Thu, 22 Sep 2005 23:34:36 +0100 http://felipecruz.com/blog_openssl-security-flaw.php Today, the OpenSSL team released an advisory describing a security vulnerability affecting all versions of OpenSSL. The flaw involves an insecure setting in OpenSSL's default implementation which allows an attacker to force your SSL clients to negotiate connections using a weaker version of SSL. Tue, 11 Oct 2005 21:13:26 +0100 http://felipecruz.com/blog_using-ssh2-and-php.php Follow these steps to integrate SSH2 into PHP, this article describes how to use the SSH2 libraries as a PHP extension in case you need your applications to connect to an SSH / SSH2 server. Fri, 24 Mar 2006 23:31:57 +0100 http://felipecruz.com/blog_raid-disk-arrays-types-explained.php Ever wondered the differences between the different raid types? Before selecting the raid array type that fits your organization understand properly whats all about. Fri, 31 Mar 2006 04:02:28 +0100 http://felipecruz.com/blog_using-the-vi-editor-unix-enviroments.php The VI editor is the most common editor on any unix environment, wether your favorite flavor of *nix is solaris or linux or freebsd vi is a must know to develop properly on the unix environments. Mon, 03 Apr 2006 05:45:10 +0100 http://felipecruz.com/blog_high-cpu-utilization-ip-input-cisco-router.php After dealing several hours with a serious network packet loss due to a high cpu utilization on our cisco 2610 router, we came with the solution, straight up from CISCO support documents. Wed, 26 Apr 2006 23:12:28 +0100 http://felipecruz.com/blog_godaddy-ip-blocks-problems.php As I said earlier, this space is used from time to time to vent my frustration, and I do hope this article does reach (someday) the proper individuals so I can get heard. Godaddy, what is the matter with your unfair ip blocks ? Sat, 19 Aug 2006 03:50:03 +0100 http://felipecruz.com/blog_plesk-psadump-psarestore-usage.php We recently faced a hard drive crash on one of our plesk servers , version 7.54 reloaded, well, in the hard way we learned a thing or two of the plesk backup utilities and their usage, mostly on the psarestore utility. Wed, 23 Aug 2006 03:43:47 +0100 http://felipecruz.com/blog_tip-hardwire-solaris.php Perhaps you bought a new sun server and are having some problems to connect to it. Read this small blog to get the right direction. Tue, 08 Aug 2006 04:57:18 +0100 http://felipecruz.com/blog_mpeg2-playback-mac.php After purchasing a Sony Handycam I needed a solution to import my Videos into my computer and be able to create decent DVD's with iDVD and iMovie ... i came up with Streamclip Sat, 23 Dec 2006 23:40:22 +0100 http://felipecruz.com/blog_posia-sobre-la-muerte.php Rumi's Poetry about Death ( Poesia de Rumi sobre la muerte ) Tue, 24 Apr 2007 06:12:09 +0100