Postfix Pre-Installation on RHEL

Postfix Pre-Installation Steps

Sendmail Stop

The first step before installing Postfix is to make sure that Sendmail is not already running on your system. You can check for this using the following command:

#/sbin/service sendmail status

If sendmail is not running the following output will be displayed:

#sendmail is stopped

If sendmail is running you will see the following:

#sendmail (pid 2138) is running

If sendmail is running on your system it is necessary to stop it before installing and configuring Postfix. To stop sendmail run the following command as super user:

#/sbin/service sendmail stop

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Finnix 107

Ryan Finnie has announced the release of Finnix 107, a small, self-contained, bootable Linux CD distribution for system administrators, based on Debian's testing branch: "Today I am pleased to announce the release of Finnix 107, only two months from the previous release, but packed with new functionality and bug fixes. Finnix 107 includes Linux kernel 3.6, and includes a fix for the (overhyped, it seems) ext4 corruption bug. Average Finnix startup times have been reduced even further by the cleanup of legacy code. In addition, the shutdown procedure, which largely has not changed in years, got a revamp and is now noticeably quicker. The x86 ISO is now being built with the isohybrid method, meaning you can now write the ISO directly to a USB flash drive at the block level to boot it.

Download: finnix-107 free Download

NetBSD 6.0.1

Jeff Rizzo has announced the release of NetBSD 6.0.1, the first security and bug-fix update of the project's 6.0 branch: "The NetBSD project is pleased to announce NetBSD 6.0.1, the first security and bug-fix update of the NetBSD 6.0 release branch. It represents a selected subset of fixes deemed important for security or stability reasons. Please note that all fixes in security and bug-fix updates (i.e., NetBSD 6.0.1, 6.0.2, etc.) are cumulative, so the latest update contains all such fixes from the corresponding minor release (in this case, 6.0). Major changes: posix_spawn() - fix processes with attributes; resolve races between vget() and vrele() resulting in vget() returning dead vnodes.

Download: NetBSD 6.0.1  free Download

Calculate Linux 13

Alexander Tratsevskiy has announced the release of Calculate Linux 13, a Gentoo-based distribution for desktops and servers: "We are proud to announce the final release of Calculate Linux 13. Main changes and fixes: meta-packages are no longer used to manage default dependencies; Portage files will be unpacked when booting for the first time; better identification of NTFS partitions; fixed the user profile configuration for VMware; Composite enabled by default for VMware; should you want to replace main applications, their launch icons will be created correctly; in case the user modified the local Portage overlay repositories, those can now be restored; Calculate Utilities were updated to 3.1; full French translation now available.

Download: Calculate Linux 13 free Downlaod

openSUSE 12.3 Milestone 2 release

Milestone 2 of openSUSE 12.3 is out and ready for testing: "A month's work since milestone 1 shows that the new release team is hitting its stride, as they it reviewed and checked in more than 470 updated packages. The biggest update is in LibreOffice, which jumps from 3.5.4 to 3.6.3. This new version of the office suite fixes a lot of annoying bugs and improves DOCX compatibility. Also this release includes a lot of new functionality, like adding the Lanczos image algorithm for resizing, which reduces aliasing in resized images. In Calc, there are several new functions, like support for color scales and data bars in XLSX and ODS document formats. In a change to policy, KDE 4.10 Beta 2 has been added to Factory already.

Download: openSUSE 12.3 Milestone 2

How to Create ISO Images from Command-Line

For this tutorial we’ll use the genisoimage utility, developed as part of the cdrkit project. genisoimage is a command-line tool for creating ISO 9660 filesystem images, which can be burnt after to a CD or DVD using some other burning tool. To install it open a terminal and type the following as root:

Ubuntu and Debain
$ sudo apt-get install genisoimage (for Centos and redhat )

For Redhat and Centos
$ yum -y install genisoimage

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GParted Live 0.14.1-1 Downlaod

Curtis Gedak has announced the release of GParted Live 0.14.1-1, a bug-fix update of the project's utility live CD containing tools for disk management and data rescue tasks: "The GParted team is proud to announce the stable release of GParted Live 0.14.1-1. This is a maintenance release that includes important bug fixes and it also adds more language translation updates. Two important bugs fixed in this release are: fix Linux software RAID device detection; fix logical partition grow overlaps extended partition end. The

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Calculate Linux 13 Beta 1 Downlaod

Alexander Tratsevskiy has announced the availability of the first beta release of Calculate Linux 13, a distribution based on Gentoo Linux: "We are happy to announce the release of the first Calculate Linux 13 beta version. Main changes: meta packages are no longer used to manage default dependencies; each Calculate Linux edition is now featuring its own appearance theme; Portage files will be unpacked when booting for the first time; Calculate Utilities were updated to 3.1 beta 2; a new tool, calculate-update - for the time being, it only handles the world file, but will be able to do much more soon; KDE was updated to

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