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Top Ten One-Liners from CommandLineFu Explained
Thursday, September 02, 2010 @ 23:08:41 CEST by tw45admin (37 reads) |  I love working in the shell. Mastery of shell lets you get things done in seconds, rather than minutes or hours, if you chose to write a program instead. In this article I'd like to explain the top one-liners from the commandlinefu.com. It's a user-driven website where people get to choose the best and most useful shell one-liners. But before I do that, I want to take the opportunity and link to a few of my articles that I wrote some time ago on working efficiently in the command line...
Interesting list at catonmat.net.
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How To Setup A Firewall For Your Linux Box In 15 Minutes
Thursday, September 02, 2010 @ 15:42:11 CEST by tw45admin (73 reads) |  Setting up a firewall for IPtables can be rather difficult, especially if its your first time. A firewall is something you need to have, whether you are just trying to keep hackers out, or trying to meet a requirement such as PCI compliance, or HIIPA compliance. Luckily the folks at rfxnetworks, created a CLI based configuration for IPtables. First, download the firewall software at this URL...
Discover the rest at Secure Hosting Directory.
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Tutorial: Best Practices with sudo on Linux
Thursday, September 02, 2010 @ 15:40:02 CEST by tw45admin (67 reads) | Many Linux users are familiar with sudo these days. Ubuntu has done a lot to popularize sudo by enforcing its use in place of encouraging users to use su to switch to the root account to install software and perform other administrative tasks. But there's much more to sudo that users and admins should know. What many users aren't aware of is that sudo can be used to execute commands as any user, not just the root user. In the hands of a skilled admin, sudo can be used to set up fine-grained permissions to provide users with access to perform a few administrative tasks without giving away the keys to the kingdom. Let's look at some of the best practices for controlling system access with sudo while still allowing users to be productive.
Yvo Van Doorn wrote this for Linux Planet.
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Resizing Linux partitions, Part 2: Advanced resizing
Thursday, September 02, 2010 @ 15:38:06 CEST by tw45admin (45 reads) | Simple partition resizing operations, such as those described in Part 1 of this series, usually conclude successfully. Sometimes, though, you need to do something different or troubleshoot problems. This article covers some of these situations. The first topic is LVM configuration and how it interacts with partition resizing. The second topic is troubleshooting techniques. Although a complete description of all the problems that can occur when resizing partitions might fill a book, a few basic principles can help you work through many common problems. Finally, this article describes some alternatives to partition resizing, should the problems you encounter prove insurmountable.
Read the rest at IBM's DeveloperWorks.
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What is commandlinefu.com?
Wednesday, September 01, 2010 @ 23:58:07 CEST by tw45admin (67 reads) | commandlinefu.com is the place to record those command-line gems that you return to again and again. Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.
Indulge yourself. Visit commandlinefu.com.
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Ksplice Free for Fedora Users
Wednesday, September 01, 2010 @ 18:43:40 CEST by tw45admin (69 reads) |  Fedora users can now perform kernel updates without the need to reboot thanks to Ksplice, now free for Fedora users. Currently, Fedora and Ubuntu Desktop are the only two Linux distros freely supported by Ksplice. Ksplice also supports server editions of Red Hat, CentOS, Debian, CloudLinux, and Ubuntu Server. “Ksplice was originally developed on Fedora in the first place,” said Jeff Arnold, Ksplice’s founder and chief executive in a press release. “We’re thrilled to contribute our service back to the Fedora community for free,” he added.
From Linux Pro Magazine.
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Dual Boot openSUSE USB Stick Installer
Wednesday, September 01, 2010 @ 18:41:47 CEST by tw45admin (91 reads) |  In the latest round of upgrades and new installs of openSUSE around here I decided to take a different approach and use the network install and install from a USB stick rather than a DVD. While I was at it I decided that I'd try to make a dual boot installer that would allow me to install either the 32-bit or 64-bit version of the latest openSUSE (version 11.3) from the same USB stick. First we need to download the openSUSE network installer images...
The rest is at the Linux Journal.
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IBM Informix Developer's Handbook
Wednesday, September 01, 2010 @ 18:39:02 CEST by tw45admin (82 reads) | IBM Informix is a low-administration, easy-to-use, and embeddable database that is idea for application development. It supports a wide range of development platforms, such as Java™, .NET, PHP, and Web services, enabling developers to build database applications in their language of choice. Informix is designed to handle RDBMS data and XML out of the box, and can easily be extended to handle new data sets. This IBM Redbooks publication provides fundamentals of Informix application development. It covers the Informix Clients installation and configuration for application development environments. It discusses...
Get the PDF document at redbooks.ibm.com.
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Using Spell Checking in Vim
Wednesday, September 01, 2010 @ 17:22:45 CEST by tw45admin (89 reads) | Mark Twain has been quoted as saying that he respected a person who could spell a word more than one way. Unfortunately, Twain's enthusiasm for creative spelling isn't widely shared today, at least in the professional world. If you need a little help in the spelling department, but prefer the old school way of editing text, you can turn to Vim's spelling support. Support for spell checking was added in Vim 7. Before that, a few scripts were available to hack spell checking support into Vim — or you could do what I did and use ispell or aspell, but inline spell checking is much nicer. If you're new to Vim and/or using Vim in text mode, it's not obvious that Vim even supports spell checking. But it does...
The tutorial continues at Linux.com.
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Google Adds Phone Calls to Linux Gmail Use
Wednesday, September 01, 2010 @ 15:52:51 CEST by tw45admin (67 reads) |  Five days after the announcement of Voice and Video Chat service in Gmail for Debian-based Linux distributions, Google unveiled a Gmail phone call service for Windows, Mac, and Linux. Rather than having both parties tied to their computers and logged into their Gmail accounts, one user can now call anyone in the US and Canada with telephone service. Google states that rates will remain free for the rest of the year and very low for international calls.
If you're a Gmail user, you've probably already noticed this, but I thought I'd post the Linux Journal article anyway.
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