Computer Operating Systems » LINUX Operating System http://www.morphosppc.com All about Computer Operating Systems Sun, 28 Aug 2011 09:20:48 +0000 en hourly 1 http://wordpress.org/?v=3.1 Open Kernel Labs – Productshttp://www.morphosppc.com/article/open-kernel-labs-products http://www.morphosppc.com/article/open-kernel-labs-products#comments Sun, 28 Aug 2011 06:22:23 +0000 http://www.morphosppc.com/article/open-kernel-labs-products

OKL4 Microvisor

[http://okl4.org OKL4] is an open source system software platform for embedded systems that can be used as a hypervisor as well as a simple real-time operating system with memory protection. The OKL4 “microvisor” is based upon the L4 microkernel. OKL4 is a Type I Embedded Hypervisor and runs on single- and multi-core platforms based on ARM, x86 and MIPS processors.

OKL4 has been deployed on over 300 million devices, mostly mobile phones, both as a baseband operating system and for hosting guest operating systems. Most notable and visible is the company’s design win at Motorola for the [http://www.motorola.com/consumers/US-EN/Motorola-Evoke-QA4-US-EN.do?vgnextoid=56cbe25ab7e7f110VgnVCM1000008406b00aRCRD Evoke QA4 messaging phone], the first phone which employs virtualization to support two concurrent operating systems (Linux and BREW) on a single processor core.

Paravirtualized Guest OSes

OK Labs also supplies ready-to-integrate paravirtualized guest application operating systems, including OK:Symbian (SymbianOS), OK:Linux (Linux) and OK:Android (Android).

Adapted from the Wikipedia article Open Kernel Labs, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/open-kernel-labs-products/feed 0 Motorola ROKR E6 – Introductionhttp://www.morphosppc.com/article/motorola-rokr-e6-introduction http://www.morphosppc.com/article/motorola-rokr-e6-introduction#comments Sat, 27 Aug 2011 16:21:26 +0000 http://www.morphosppc.com/article/motorola-rokr-e6-introduction

Motorola ROKR E6 (pronounced “”rocker””) is the third phone in Motorola’s ROKR range of multimedia phones. It was released in the China on November 14, 2006, and subsequently worldwide on December 4, 2006.

The ROKR E6 is a direct descendant of the E680 and the MING, sharing the same Montavista Linux operating system, Intel XScale PXA270 series processors, and the RealPlayer media player instead of the iTunes player installed on the first ROKR phone. The E6 features a built-in FM radio, (but no radio recording). It also inherited the 2-megapixel camera with manual macro-switching and business card recognition from MING, enhanced with QR Code recognition functions. Additionally, the phone features a 3.5 mm headphone jack, allowing use of a standard-sized headphone plug.

It comes installed with Picsel Viewer with the ability to read Microsoft Office and PDF file formats.

Adapted from the Wikipedia article Motorola ROKR E6, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/motorola-rokr-e6-introduction/feed 0 Disk cloning – Operating environmenthttp://www.morphosppc.com/article/disk-cloning-operating-environment http://www.morphosppc.com/article/disk-cloning-operating-environment#comments Sat, 27 Aug 2011 09:20:53 +0000 http://www.morphosppc.com/article/disk-cloning-operating-environment

A disk cloning program needs to be able to read even protected operating system files on the source disk, and must guarantee that the system is in a consistent state at the time of reading. It must also overwrite any operating system already present on the destination disk. To simplify these tasks, most disk cloning programs can run under an operating system different from the native operating system of the host computer, for example, MS-DOS or an equivalent such as PC-DOS or DR-DOS, or Linux. The computer is booted from this operating system, the cloning program is loaded and copies the Windows file system. Many programs (e.g. Acronis True Image) can clone a disk, or make an image, from within Windows, with special provision for copying open files; but an image cannot be restored onto the Windows System Drive under Windows.

A disc cloning program running under non-Windows operating systems must have device drivers or equivalent for all devices used. The manufacturers of some devices do not provide suitable drivers, so the manufacturers of disk cloning software must write their own drivers, or include device access functionality in some other way. This applies to tape drives, CD and DVD readers and writers, and USB and FireWire drives. Cloning software contains its own TCP/IP stack for multicast transfer of data where required.

Adapted from the Wikipedia article Disk cloning, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/disk-cloning-operating-environment/feed 0 Btrfs – Introductionhttp://www.morphosppc.com/article/btrfs-introduction http://www.morphosppc.com/article/btrfs-introduction#comments Fri, 26 Aug 2011 17:21:41 +0000 http://www.morphosppc.com/article/btrfs-introduction

Btrfs (B-tree file system, pronounced “”Butter F S””, “”B-tree F S””) is a GPL-licensed copy-on-write file system for Linux.

Btrfs is intended to address the lack of pooling, snapshots, checksums and integral multi-device spanning in Linux file systems, these features being crucial as the use of Linux scales upward into larger storage configurations common in the enterprise. Chris Mason, the principal author of the filesystem, has stated its goal was “to let Linux scale for the storage that will be available. Scaling is not just about addressing the storage but also means being able to administer and to manage it with a clean interface that lets people see what’s being used and makes it more reliable.”

Oracle has also begun work on CRFS (Coherent Remote File System), a network filesystem protocol intended to leverage the Btrfs architecture to gain higher performance than existing protocols (such as NFS and CIFS) and to expose Btrfs features such as snapshots to remote clients.

Btrfs 1.0 (with finalized on-disk format) was originally slated for a late 2008 release, but a stable release has not been made . It has, however, been accepted into the mainline kernel for testing as of 2.6.29-rc1. Several Linux distributions (including SLES 11 SP1 and the upcoming RHEL 6) have also begun offering Btrfs as an experimental choice of root file system during installation. It is also used as the default file system for the mobile operating system MeeGo.

The principal developer of the ext3 and ext4 file systems, Theodore Ts’o, has stated that ext4 is a stop-gap and that Btrfs is the way forward, having “a number of the same design ideas that reiser3/4 had”.

Adapted from the Wikipedia article Btrfs, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/btrfs-introduction/feed 0 Verdana – Legal restrictions and prevalencehttp://www.morphosppc.com/article/verdana-legal-restrictions-and-prevalence http://www.morphosppc.com/article/verdana-legal-restrictions-and-prevalence#comments Fri, 26 Aug 2011 12:21:20 +0000 http://www.morphosppc.com/article/verdana-legal-restrictions-and-prevalence

Released in 1996, Verdana was bundled with subsequent versions of the Windows operating system, as well as their Office and Internet Explorer software on both Windows and Mac OS. In addition, it was long available for download from Microsoft’s web site allowing it to be used by any system supporting TrueType fonts. The downloadable file is still available legally from a third-party web site; see the External links section. Verdana is also one of the bundled book-reading fonts on the iPad.

According to one long-running survey, the availability of Verdana is 99.34% on Windows (making it the second most common font on that platform) and 96.06% (seventh most common) on computers running Mac OS. As shown by the same survey, however, it is uncommon on free operating systems like Linux. This is due to legal restrictions, as copying or redistributing the font is illegal unless a proprietary license is acquired.

Adapted from the Wikipedia article Verdana, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/verdana-legal-restrictions-and-prevalence/feed 0 ProvideX – Introductionhttp://www.morphosppc.com/article/providex-introduction http://www.morphosppc.com/article/providex-introduction#comments Fri, 26 Aug 2011 02:21:39 +0000 http://www.morphosppc.com/article/providex-introduction

ProvideX is a computer language and development environment derived from Business Basic (a business oriented derivative of BASIC) in the mid-1980s.

ProvideX is available on several operating systems (Unix/Linux/Windows/Mac OS X) and includes not only the programming language but also file system, presentation layer interface, and other components. The language is primarily designed for use in the development of business applications. There are numerous companies using the technology as the basis for their application in markets such as distribution, property management, health care, transportation, etc. While primarily used in North America, there are developers around the world which use ProvideX.

Over the years since its inception and as the computer industry has changed, ProvideX has added functionality such as a graphical interface, client-server capabilities, access to external databases, web services, and, more recently, object oriented programming capabilities. The language has generally maintained compatibility with its roots; thus applications developed in ProvideX have been able to remain current even though the world of technology has changed.
Adapted from the Wikipedia article ProvideX, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/providex-introduction/feed 0 Gentoo Linux – Introductionhttp://www.morphosppc.com/article/gentoo-linux-introduction http://www.morphosppc.com/article/gentoo-linux-introduction#comments Thu, 25 Aug 2011 17:21:09 +0000 http://www.morphosppc.com/article/gentoo-linux-introduction

Gentoo Linux ( ) is a computer operating system built on top of the Linux kernel and based on the Portage package management system. It is distributed as free and open source software, but includes some proprietary software packages. Unlike a conventional software distribution, the user compiles the source code locally according to their chosen configuration. There are normally no precompiled binaries for software, continuing the tradition of the ports collection, although for convenience, some software packages (such as Mozilla Firefox and OpenOffice.org) are also available as precompiled binaries for various architectures where compiling would otherwise be very time consuming. The development project and its products are named after the Gentoo penguin. Gentoo package management is designed to be modular, portable, easy to maintain, flexible, and optimized for the user’s machine. Gentoo describes itself as a metadistribution, “because of its near-unlimited adaptability”.

Adapted from the Wikipedia article Gentoo Linux, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/gentoo-linux-introduction/feed 0 Prelink – Introductionhttp://www.morphosppc.com/article/prelink-introduction http://www.morphosppc.com/article/prelink-introduction#comments Wed, 24 Aug 2011 12:21:45 +0000 http://www.morphosppc.com/article/prelink-introduction

prelink is a free program written by Jakub Jelínek of Red Hat for POSIX-compliant operating systems, principally Linux (because it modifies ELF executables). It is intended to speed up a system by reducing the time a program needs to begin. Actual results have been mixed, but it seems to aid systems with a large number of libraries, such as KDE.

The equivalent process on Mac OS X is called “prebinding”.

Adapted from the Wikipedia article Prelink, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/prelink-introduction/feed 0 NX-OS – Introductionhttp://www.morphosppc.com/article/nx-os-introduction http://www.morphosppc.com/article/nx-os-introduction#comments Mon, 22 Aug 2011 12:21:19 +0000 http://www.morphosppc.com/article/nx-os-introduction

NX-OS is a data center class operating system by Cisco designed with modularity, resiliency, and serviceability at its foundation. NX-OS was previously known as SAN-OS. SAN-OS was only intended for the MDS product line of storage switches.

It is based on MontaVista Software embedded Linux. It is self-healing, flexible, scalable, available, serviceable, and manageable. It provides a robust and rich feature set along with a state-of-the-art implementations of relevant networking standards.

It is compatible with other Cisco operating systems. It runs on both the Nexus and MDS product lines by Cisco.

The CLI is very similar to IOS.

Comparison between IOS and NX-OS:

* NX-OS does not support the login command to switch users.

* NX-OS does not distinguish between standard or extended access lists, all lists are named and “extended” in functionality. (@>=4.2 at least)

* NX-OS does not support scp server.

Adapted from the Wikipedia article NX-OS, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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]]> http://www.morphosppc.com/article/nx-os-introduction/feed 0 Nokia Nseries – Operating Systemshttp://www.morphosppc.com/article/nokia-nseries-operating-systems http://www.morphosppc.com/article/nokia-nseries-operating-systems#comments Mon, 22 Aug 2011 11:21:20 +0000 http://www.morphosppc.com/article/nokia-nseries-operating-systems

The first Nseries device, the N90i, utilised the older Symbian OS 8.1 mobile operating system, as did the N70. Subsequently Nokia switched to using SymbianOS 9 for all later Nseries devices (except the N72, which was based on the N70). Newer Nseries devices incorporate newer revisions of SymbianOS 9 that include Feature Packs. The Nokia N8 will be the first device that will run on Symbian^3.

The N800, N810 and N900 are as of July 2010 the only Nseries devices to not use Symbian OS. They use the Linux-based Maemo.Nokia stated that Maemo would be developed alongside Symbian. Maemo has since (Maemo “6″ and beyond) merged with Intel’s Moblin, and become MeeGo, which will continue to be developed for mobile devices.

Nokia revealed that the N8 will be the last device in its flagship N-series devices to ship with Symbian OS, but will continue using Symbian on its mass-market handsets.Instead Nokia will use Meego for its high-end flagship devices.

Adapted from the Wikipedia article Nokia Nseries, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

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