InfoWorld's Tom Yager writes in favor of Unix in IT, which has been increasingly losing ground to Linux. "Unix matters for a reason that escapes analysts' notice," Yager writes. "It's that little circle with the R in it." Asking whether IT would rather have a vendor's promise to interoperate with competitors' systems, or a contract obliging them to, Yager stresses the importance of The Open Group's registered trademark of the Unix 03 spec. "The trademark provides IT organizations that need to be sure, without need for digging, that Unix means something, and it does. It means that Unix enterprise solutions work and work together, without regard for the brand on the hardware" -- a guarantee of interoperability that is the "product of cooperation among Unix vendors, IT operations, universities, and professional organizations."
The man has been dead for over two hundred years, but no one can deny his genius when it came to coming up with clever quotes that people would be repeating centuries after his death. Though nobody living in the 18th century could foresee the computer technology we benefit from today, Franklin's wise words can be applied to really any aspect of life, and Martin Streicher has applied ten of Franklin's famous quotes to the area of UNIX systems administration. Read the full article for some helpful hints in administration all sparked from our dear friend Franklin himself, covering everything from security to the wisdom in frugality.
UNIX's method of handling file systems and volumes provides you with an opportunity to improve your systems' security and performance. This article addresses the issue of why you should split up your disk data into multiple volumes for optimized performance and security.
If you've spent hours on a task, such as debugging an application, it can be maddening to lose your work in an instant. This article shows you how to keep your shell and your work alive, even across multiple sessions and dropped connections using GNU Screen. Screen is a remarkable tool that you will quickly find invaluable in any work you perform on the command line. In fact, use it once, and you will wonder how you ever lived without it.
There are many tools available that allow you to synchronize files across UNIX directories, but doing it effectively, and securely, takes a little bit more effort. This article looks at solutions for synchronizing files across UNIX filesystems and different computer systems securely, and at solutions that allow you to synchronize encrypted versions of your files for the purposes of backup.
Protothreads are a type of extremely lightweight threads - each protothread requires only two bytes of memory - that are usually used for embedded firmware programming, where memory is at a premium. Protothreads combine the low overhead with event-driven programming with the algorithmic clarity of threaded programming.
IBM's primer to Cygwin. Cygwin is a UNIX-like environment for the Microsoft Windows operating system. Cygwin includes a real UNIX shell, a Portable Operating System Interface (POSIX) emulation library, and thousands of UNIX utilities ported to Windows. Learn how to drop to Cygwin and use its UNIX-like command line to manipulate the system.
Linux and other Unix-like operating systems use the term "swap" to describe both the act of moving memory pages between RAM and disk. It is common to use a whole partition of a hard disk for swapping. However, with the 2.6 Linux kernel, swap files are just as fast as swap partitions. Now, many admins (both Windows and Linux/UNIX) follow an old rule of thumb that your swap partition should be twice the size of your main system RAM. Let us say I’ve 32GB RAM, should I set swap space to 64 GB? Is 64 GB of swap space really required? How big should your Linux / UNIX swap space be?
OSNews recently ran a story on UNIX virtualization functionality which was a bit shallow on technical details. HP's Christophe de Dinechin (who had already begun working on virtualization at HP when we interviewed him several years ago, but couldn't talk about it then) contacted us to tell us he'd gone into more technical detail on his blog here and here saying, "They are a bit long, and probably boring to a general audience, but since your readers are generally more interested in OS technology than the average population, I thought I'd bring these to your attention."
This article explores the virtualization features available to administrators across several UNIX hardware platforms. Discover what they have to offer and how their features compare to PowerVM.
A lazy sysadmin is a good sysadmin. Time spent in finding more-efficient shortcuts is time saved later on for that ongoing project of "reading the whole of the internet", so try Linux Format's 10 handy tips to make your admin life easier.
How could someone make a more powerful editing tool than vi, you may ask? The answer is Vim, and this article provides details on the many enhancements that have made Vim a highly used and acceptable editor in the world of UNIX and Linux.
The IBM AIX operating system has kept to what's important: stability, functionality, robustness. And it has done it by keeping a strong command-line interface (CLI). If you never learned to use the CLI or need a refresher on its basics, read on.
The AIX operating system and other UNIX-like operating systems need a way to communicate with the kernel. This is done through the use of a shell. The Korn shell is the default shell used with AIX. Discover how to automate many tasks and save a great deal of time by writing your own Korn shells scripts.
HP has announced that they will open source the AdvFS under the second version of the GPL. AdvFS is a mid-90's file system that is used by the Tru64 UNIX operating system. The Wikipedia page on AdvFS provides the necessary background information and feature set of the AdvFS file system.
Ever wonder what makes a computer tick or how a UNIX server does what it does? Discover what happens when you push the power button on your computer. This article discusses the different boot types, managing the AIX bootlist and the AIX boot sequence. After reading this article, you will better understand what exactly happens when your server starts.
"This is extraordinary news for all nerds, computer scientists and the Open Source community: the source code of the MULTICS operating system (Multiplexed Information and Computing Service), the father of UNIX and all modern OSes, has finally been opened . Multics was an extremely influential early time-sharing operating system started in 1964 and introduced a large number of new concepts, including dynamic linking and a hierarchical file system. It was extremely powerful, and UNIX can in fact be considered to be a 'simplified' successor to MULTICS (the name 'Unix' is itself a hack on 'Multics'). The last running Multics installation was shut down on October 31, 2000."
Diagnose and service memory overlays and address errors more efficiently with POWER6 processors and AIX Version 6.1. In the AIX operating system, software components share the kernel address, creating a serviceability issue for the AIX kernel and kernel extensions.
"Many directories in the UNIX file system serve a special purpose, and certain directories are named per long-standing convention. In this instalment of the 'Speaking UNIX' series, discover where UNIX stores important files."
Prior to the general availability of AIX 6, IBM intends to make a pre-release version of AIX 6 available in an open beta. "AIX is an open, standards-based UNIX operating system that provides the enterprise information technology infrastructure for thousands of clients around the world. IBM intends to take the next step in the evolution of the AIX operating system with the release of the AIX V6.1 OS."