From beginlinux.com The primary purpose of the slave server is to provide a backup to the primary master server should it go down for any reason. The major difference between the master server and the slave is where they get their data. The primary master server gets it’s information from zone files that are created…

From kmandla.wordpress.com As if screen wasn’t cool enough to start with, here’s a little bonus to make your day a wee bit brighter: There’s an -x flag for screen, which the man page and screen’s own –help tips suggest you can use to attach to a screen session that’s not detached. “Multi-user mode,” is what…

From blog.taragana.com Like every other Operating System Linux not free from security issues. These issues can be anticipated and averted only with suitable preventive steps. However, sticking to the buttoned-down techniques for securing the Linux systems such as locking the network, minimizing risk by locking down the system and restricting the access to only a…

Vinux is a remastered version of the popular Ubuntu 10.04 Lucid Lynx distribution optimised for the needs of blind and partially sighted users.. It provides three screen readers, two full-screen magnifiers, global font-size and colour changing facilities, and out-of-the-box support for USB Braille displays. The Vinux live CD boots into the Orca screen reader which…

From blog.amit-agarwal.co.in Here is the command to test that all the directories in your path actually exist. IFS=:;for p in $PATH; do test -d $p || echo $p; done read more…

From mywiki.wooledge.org This page shows common errors that Bash programmers make. The following examples are all flawed in some way: ???Contents for i in `ls *.mp3` cp $file $target Filenames with leading dashes [ $foo = “bar” ] cd `dirname “$f”` [ “$foo” = bar && “$bar” = foo ] [[ $foo > 7 ]]…

From theserverpages.com So you installed a firewall, but it seems to have crippled passive ftp connections. Your clients are complaining of timeouts and lagging performance of the FTP server. All these are signs that you did not configure your firewall and FTP server properly for passive FTP connections. This how-to will try to explain everything…

Highest quality Linux books all of which are available for free download. Please remember that all titles are copyright © the author or the publisher. The author / publisher has generously allowed them to be available for free online. Please respect the terms and conditions of the copyright. We are constantly adding new titles so…

From eweek.com Canonical Delivers Ubuntu Advantage Service Offering for Linux Desktop and Server Users Canonical is preparing to introduce a new service option for Ubuntu Linux users, known as Ubuntu Advantage. Slated for official release on June 7, Ubuntu Advantage is a comprehensive service that combines systems management tools, technical support, access to online resources,…

From IBM.com 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…