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Search and replace on steroids: Do more with sed
These tips can help administrators help themselves through advanced text editing with the UNIX Stream Editor (sed) utility.
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Using the graphical Service Configuration tool in RHEL
The Red Hat Service Configuration tool is used to start a service that hasn't been started, or to make sure a service starts automatically at the moment your server boots.
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Setting up Ubuntu Server 11.04 for iSCSI storage
Learn how Ubuntu Server 11.04 can be set up as an iSCSI storage server using simple Linux command line operations.
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Managing Red Hat network settings using NetworkManager
Red Hat Enterprise Linux includes a graphical network management application called NetworkManager that can be used to set network connections instead of using the command line.
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Using open source tools to monitor Apache Web Server
Much of today’s business relies on smooth operation of Web servers. Explore these three open source tools to monitor performance, security and traffic on Apache Web servers.
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Upgrading to Ubuntu Server 11.04
Upgrading to Ubuntu Server 11.04 may not be necessary, as you may want to wait for the April 2012 release of Ubuntu 12.04 LTS. Learn about why to upgrade now, and how to do it.
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Securing an Apache Web server with SELinux
Learn how to keep your Apache Web server secure by applying basic SELinux settings, including adjusting SELinux so Apache uses nondefault settings.
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Managing processes on Red Hat using GUI tools
Use the learn gnome-system-monitor command on Red Hat Enterprise Linux to monitor and manage processes on your server in a graphical environment.
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Ten command line time-savers for Linux admins
Quick command line navigation and execution is the key to easy Linux system administration. Learn these 10 command line tricks to increase your proficiency and speed in Bash or other Linux shells.
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Using Puppet to install an OpenStack Nova compute cloud
The open source cloud project, OpenStack, can be used to host private or public clouds. Learn how to install it using the Puppet configuration management tool on your Linux server.
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Managing Red Hat from a graphical environment over SSH
Red Hat Enterprise Linux administration can be conducted through a GNOME graphical interface. Learn how to remotely use these tools over an SSH connection using PuTTY.
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Secure remote Linux logging with rsyslog
The rsyslog daemon allows a choice between UDP, TCP and RELP logging protocols for your Linux system. TCP and RELP offer guaranteed log messaging, for more secure logs.
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Mastering the Linux history command
Learning how to take advantage of the Linux history command, as well as the Bash variant, can save Linux admins a lot of time. Discover how the command works, including shortcuts, searching and set...
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Using SUSE Manager for virtualized Linux machines
Linux administrators using both SUSE Linux Enterprise Server and Red Hat Enterprise Linux can take advantage of the features in SUSE Manager, a multiplatform server management tool to automate conf...
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How to improve KVM performance by adjusting KSM
KVM Virtualization on Red Hat Enterprise Linux 6 is optimized for hosting environments with many virtual machines by using kernel samepage merging. But, disabling KSM can provide better performance...
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Comparing the advantages of zshell over bash shell
Linux admins interested in using zsh instead of bash shell will learn what is similar and what is different. Zshell offers new features for tab completion and typo correction and others that would ...
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Postfix MTA configuration on Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 6 uses Postfix for mail transmission. Learn how to configure the open source mail server in your Linux system.
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Ubuntu 11.04 speeds desktop navigation with Unity
Ubuntu Linux 11.04 features the Unity desktop, which streamlines navigation through the addition of the Super key as well as the Launcher, Dash and Panel tools for application management.
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Signing RPM files using a Gnu Privacy Guard key
Signing Linux RPM packages assures users of the package that the RPM has not been tampered with. Learn how to create a Gnu Privacy Guard key and sign your RPM packages.
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Doing design with open source: Five graphics programs
Learn what features open source design software such as Gimp, Inkscape, Dia, Pencil and Shutter offer enterprise design shops that need images for website graphics or print.
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Optimize system performance with Linux cgroups
The Linux cgroups feature lets you make a profile to manage resources to keep your system under control.
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Correct a GRUB error in short order
A GRUB error will stop a Linux server cold, but following these steps should get you back on track.
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Setting up a mirrored Linux DRBD configuration
Administrators can use the distributed replicated block device (DRBD) in Linux to set up basic data redundancy to connect the storage of multiple servers.
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Tune the Linux Ext4 file system for optimal performance
While Ext4 by default works fine for most people, follow these tips to tweak your servers to squeeze out even more speed.