nixCraft » CentOS http://www.cyberciti.biz/tips This is a Linux sys admin journal by Vivek about sys admin work, Linux tips & tricks, hacks, news and more. Fri, 03 Feb 2012 22:45:35 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 30 Best Sources For Linux / *BSD / Unix Documentation On the Webhttp://www.cyberciti.biz/tips/linux-unix-bsd-documentations.html http://www.cyberciti.biz/tips/linux-unix-bsd-documentations.html#comments Wed, 21 Dec 2011 20:11:40 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=8323 Man 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.
Dennis Ritchie and Ken Thompson working with UNIX PDP11]]> http://www.cyberciti.biz/tips/linux-unix-bsd-documentations.html/feed 23 FAQ Updates: Dec/22/2011http://www.cyberciti.biz/tips/faq-updates-dec222011.html http://www.cyberciti.biz/tips/faq-updates-dec222011.html#comments Wed, 21 Dec 2011 20:03:50 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=8604 Our FAQ section is updated in last few days with new howto:

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Get intimated about our new howtos / faqs as soon as it is released via RSS feed OR follow us on twitter OR join our 16k+ facebook fans for more tips and news about Linux.]]> http://www.cyberciti.biz/tips/faq-updates-dec222011.html/feed 0 Linux / UNIX Desktop Fun: Let it Snow On Your Desktophttp://www.cyberciti.biz/tips/linux-unix-xsnow.html http://www.cyberciti.biz/tips/linux-unix-xsnow.html#comments Tue, 20 Dec 2011 13:22:19 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=8391 Feeling lonely this holiday season? Try Xsnow. This little app will let is snow on the desktop. Santa and his reindeer will complete your festive season feeling with moving snowflakes on your desktop, with Santa Claus running all over the screen. ]]> http://www.cyberciti.biz/tips/linux-unix-xsnow.html/feed 5 FAQ Updates – June/26/2011http://www.cyberciti.biz/tips/faq-updates-june262011.html http://www.cyberciti.biz/tips/faq-updates-june262011.html#comments Sun, 26 Jun 2011 09:43:29 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=7901 Our FAQ section is updated in last few days with new howtos:

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Not our Fan yet? We suggest you become one right away! Just visit our Facebook Page. Click on the "like" button.]]> http://www.cyberciti.biz/tips/faq-updates-june262011.html/feed 0 HowTo: Debug Crashed Linux Application Core Files Like A Prohttp://www.cyberciti.biz/tips/linux-core-dumps.html http://www.cyberciti.biz/tips/linux-core-dumps.html#comments Thu, 03 Jun 2010 09:34:03 +0000 Vivek Gite /dev/null 2>&1]]> http://www.cyberciti.biz/tips/?p=7006 Core dumps are often used to diagnose or debug errors in Linux or UNIX programs. Core dumps can serve as useful debugging aids for sys admins to find out why Application like Lighttpd, Apache, PHP-CGI or any other program crashed. Many vendors and open source project author requests a core file to troubleshoot a program. A core file is generated when an application program abnormally terminates due to bug, operating system security protection schema, or program simply try to write beyond the area of memory it has allocated, and so on. This article explains how to turn on core file support and track down bugs in programs.]]> http://www.cyberciti.biz/tips/linux-core-dumps.html/feed 18 Tips To Protect Linux Servers Physical Console Accesshttp://www.cyberciti.biz/tips/tips-to-protect-linux-servers-physical-console-access.html http://www.cyberciti.biz/tips/tips-to-protect-linux-servers-physical-console-access.html#comments Thu, 12 Mar 2009 19:09:31 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=4490 This is an user contributed article.

Linux computer console is a physical device to operate a computer / server. Here are few steps which, if taken, make it more difficult for an attacker to quickly modify a system from its console.]]> http://www.cyberciti.biz/tips/tips-to-protect-linux-servers-physical-console-access.html/feed 19 Paid Support From Novell / Red Hat Not Important for Linux Adoptionhttp://www.cyberciti.biz/tips/ubuntu-linux-ready-for-enterprise.html http://www.cyberciti.biz/tips/ubuntu-linux-ready-for-enterprise.html#comments Sat, 09 Aug 2008 07:30:06 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=2610 Companies are increasingly choosing free community-driven Linux distributions instead of commercial offerings with conventional support options from Red Hat or Novell due to dissatisfaction with the cost of support services.]]> http://www.cyberciti.biz/tips/ubuntu-linux-ready-for-enterprise.html/feed 3 Download Of The Day: Firefox 3.0.1 (Critical Security Update)http://www.cyberciti.biz/tips/download-firefox-301-critical-security-update.html http://www.cyberciti.biz/tips/download-firefox-301-critical-security-update.html#comments Fri, 18 Jul 2008 10:36:05 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=2478 http://www.cyberciti.biz/tips/download-firefox-301-critical-security-update.html/feed 2 Impact of the Debian OpenSSL Vulnerability On other Linux Distributionhttp://www.cyberciti.biz/tips/impact-of-debian-openssl-vulnerability.html http://www.cyberciti.biz/tips/impact-of-debian-openssl-vulnerability.html#comments Mon, 23 Jun 2008 10:04:28 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=2402 http://www.cyberciti.biz/tips/impact-of-debian-openssl-vulnerability.html/feed 1 Project Spacewalk: Red Hat Open Sourced RHN Softwarehttp://www.cyberciti.biz/tips/redhat-project-spacewalk.html http://www.cyberciti.biz/tips/redhat-project-spacewalk.html#comments Fri, 20 Jun 2008 12:50:09 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=2393 http://www.cyberciti.biz/tips/redhat-project-spacewalk.html/feed 0 Security Alert: Red hat / CentOS Linux Freetype Various Security Issueshttp://www.cyberciti.biz/tips/freetype-security-update.html http://www.cyberciti.biz/tips/freetype-security-update.html#comments Wed, 21 May 2008 17:32:39 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=2399 http://www.cyberciti.biz/tips/freetype-security-update.html/feed 0 Red Hat Enterprise Linux 5.2 Releasedhttp://www.cyberciti.biz/tips/rhel-51-to-52-upgrade.html http://www.cyberciti.biz/tips/rhel-51-to-52-upgrade.html#comments Wed, 21 May 2008 17:14:47 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=2308 http://www.cyberciti.biz/tips/rhel-51-to-52-upgrade.html/feed 1 Linux Failed Login Control: Lock and Unlock User Accounts Using PAMhttp://www.cyberciti.biz/tips/lock-unlock-set-number-of-login-attempts.html http://www.cyberciti.biz/tips/lock-unlock-set-number-of-login-attempts.html#comments Sun, 30 Mar 2008 20:44:46 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=2333 http://www.cyberciti.biz/tips/lock-unlock-set-number-of-login-attempts.html/feed 3 Install Squid Proxy Server on CentOS / Redhat enterprise Linux 5http://www.cyberciti.biz/tips/howto-rhel-centos-fedora-squid-installation-configuration.html http://www.cyberciti.biz/tips/howto-rhel-centos-fedora-squid-installation-configuration.html#comments Thu, 30 Aug 2007 11:41:54 +0000 Vivek Gite http://www.cyberciti.biz/tips/howto-rhel-centos-fedora-squid-installation-configuration.html http://www.cyberciti.biz/tips/howto-rhel-centos-fedora-squid-installation-configuration.html/feed 55 Why my Linux server ext3 filesystem go read-only?http://www.cyberciti.biz/tips/linux-filesytem-goes-read-only.html http://www.cyberciti.biz/tips/linux-filesytem-goes-read-only.html#comments Tue, 28 Aug 2007 10:46:57 +0000 Vivek Gite http://www.cyberciti.biz/tips/linux-filesytem-goes-read-only.html http://www.cyberciti.biz/tips/linux-filesytem-goes-read-only.html/feed 25 How to: Linux reset the permissions of the installed rpm packages with –setperms optionhttp://www.cyberciti.biz/tips/reset-rhel-centos-fedora-package-file-permission.html http://www.cyberciti.biz/tips/reset-rhel-centos-fedora-package-file-permission.html#comments Tue, 28 Aug 2007 10:07:03 +0000 Vivek Gite http://www.cyberciti.biz/tips/reset-rhel-centos-fedora-package-file-permission.html http://www.cyberciti.biz/tips/reset-rhel-centos-fedora-package-file-permission.html/feed 16 Howto: Redhat Enterprise Linux SELinux policy guidehttp://www.cyberciti.biz/tips/rhel5-centos-selinux-howto-guide.html http://www.cyberciti.biz/tips/rhel5-centos-selinux-howto-guide.html#comments Wed, 22 Aug 2007 05:00:43 +0000 Vivek Gite http://www.cyberciti.biz/tips/rhel5-centos-selinux-howto-guide.html http://www.cyberciti.biz/tips/rhel5-centos-selinux-howto-guide.html/feed 3 Linux rpm command no such file or directory error and solutionhttp://www.cyberciti.biz/tips/rpm-command-no-such-file-directory-error.html http://www.cyberciti.biz/tips/rpm-command-no-such-file-directory-error.html#comments Mon, 30 Jul 2007 21:22:14 +0000 Vivek Gite http://www.cyberciti.biz/tips/rpm-command-no-such-file-directory-error.html http://www.cyberciti.biz/tips/rpm-command-no-such-file-directory-error.html/feed 0 Howto: Add a new yum repository to install software under CentOS / Redhat Linuxhttp://www.cyberciti.biz/tips/rhel5-fedora-core-add-new-yum-repository.html http://www.cyberciti.biz/tips/rhel5-fedora-core-add-new-yum-repository.html#comments Wed, 18 Jul 2007 12:37:36 +0000 Vivek Gite http://www.cyberciti.biz/tips/rhel5-fedora-core-add-new-yum-repository.html http://www.cyberciti.biz/tips/rhel5-fedora-core-add-new-yum-repository.html/feed 9 Linux Postfix SMTP (Mail Server) SSL Certificate Installations and Configurationhttp://www.cyberciti.biz/tips/postfix-smtp-ssl-certificate-csr-installation-guide.html http://www.cyberciti.biz/tips/postfix-smtp-ssl-certificate-csr-installation-guide.html#comments Thu, 12 Jul 2007 19:51:13 +0000 Vivek Gite http://www.cyberciti.biz/tips/postfix-smtp-ssl-certificate-csr-installation-guide.html In this tutorial yo0u will learn about Installing SSL Certificate (Secure Server Certificate) to secure communication between Postfix SMTP server and mail client such as Outlook or Thunderbird. ]]> http://www.cyberciti.biz/tips/postfix-smtp-ssl-certificate-csr-installation-guide.html/feed 11