Best of Technical Support
How can I change the “user's name” in my finger information to a different name? For instance, how could I change my name from “Dave” to “David” ? What commands would I need to use? —David Innes
You can change that information (and more) using chfn (for change finger name). To just change the user's full name, use:
chfn -f "Full Name" username
For instance, to change the full name of the user “random” , you might enter:
chfn -f "J. Random Hacker" randomchanging the full name of the user “random” to “J. Random Hacker” .
If you run chfn as a regular user, you can leave out your own username since chfn defaults to changing your own information. (Only root can change another user's information.)
If you run chfn without the -f argument, it will prompt you for all the fields it can change. —Steven Pritchard President Southern Illinois Linux Users Group steve@silug.org
My distribution kernel is of version 2.0.27-5. What does the last number “5” mean? Some patch sublevel? Can I patch this kernel with patch-2.0.28 and patch-2.0.29 that are generally distributed at Linux web sites? Is this kernel somewhat modified and incompatible with these patches? —Oleg Zhirov Red Hat 4.1
The “-5” is a Red Hat-specific release number, For your particular version, it is the fifth time we've had to build the package for one reason or another. It has nothing to do with the kernel version or kernel patches.
This kernel should be patchable using the standard patches. However, I usually still suggest grabbing the entire tarball of the new version that you want, since there have been problems in the past with applying patches rather than using the full source. —Donnie Barnes Red Hat Software redhat@redhat.com
How can a non-root user leave a process running while not logged in? I have seen this done by detaching screens under various Unix flavors, yet I haven't found a similar program for Linux. —R. J. Rodd Slackware
Most of the Linux distributions come with the program screen which allows you to do just what you describe. If you don't have it, you can get the source for screen from: FTP://prep.ai.mit.edu/pub/gnu/screen-3.7.2.tar.gz
It compiles on Linux easily. —Steven Pritchard President Southern Illinois Linux Users Group steve@silug.org
If you want to keep processes running in the background after you log out, you can employ the nohup command. Check the man page for details, but briefly, just insert nohup at the beginning of the command line you want to live on after you've logged out; e.g., if you've got a book you need to typset with LaTeX:
nohup latex book.tex &
Be sure to include the ampersand at the end to indicate to the system the process is to be run in the background. —Gary Moore, Technical Editor
I would like to place a Linux system on a network populated with IPX/SPX Netware file servers. I am hoping there is a way to give the Linux system a “Netware/IPX/SPX” personality, thus allowing access to it from existing Netware clients. Where can I get help? —Todd Morris Slackware 2.0.x
Take a look at the IPX HOWTO. Everything about IPX-based problems and solutions is explained in this document. —Pierre Ficheux Lectra Systemes
How do I make AfterStep the default window manager for X instead of fvwm2? —Mohammed Rizal Othman SuSE 4.4
For system-wide changes, edit the global xinitrc (usually in /usr/X11/lib/X11/xinit/). To change your personal setup, edit the file .xinitrc (in your home directory) or, if you don't have an .xinitrc file, just copy the global xinitrc to ~/.xinitrc and edit that. —Steven Pritchard President Southern Illinois Linux Users Group steve@silug.org
I have been trying to create an entry in /etc/printcap for an HP Laser printer that is connected to the network using an HP Jetdirect card. I can get it to print, but I cannot get it to use the magic filter that comes with Red Hat to enable printing of PostScript files. Any help would be appreciated. —Pat Rooney Red Hat 4.1
Unfortunately, the normal lpd that we ship cannot handle using filters on remote printers. Only local printers may be filtered.
If you require this functionality, you can remove the lpd package and install LPRng or one of the other print servers available from the Internet. Red Hat is investigating the use of other print servers in future versions. —Donnie Barnes Red Hat Software redhat@redhat.com
Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.
Sponsored by AMD
Built-in forensics, incident response, and security with Red Hat Enterprise Linux 6
Every security policy provides guidance and requirements for ensuring adequate protection of information and data, as well as high-level technical and administrative security requirements for a system in a given environment. Traditionally, providing security for a system focuses on the confidentiality of the information on it. However, protecting the data integrity and system and data availability is just as important. For example, when processing United States intelligence information, there are three attributes that require protection: confidentiality, integrity, and availability.
Learn more about catching the bad guy in this free white paper.
Sponsored by DLT Solutions
| Dynamic DNS—an Object Lesson in Problem Solving | May 21, 2013 |
| Using Salt Stack and Vagrant for Drupal Development | May 20, 2013 |
| Making Linux and Android Get Along (It's Not as Hard as It Sounds) | May 16, 2013 |
| Drupal Is a Framework: Why Everyone Needs to Understand This | May 15, 2013 |
| Home, My Backup Data Center | May 13, 2013 |
| Non-Linux FOSS: Seashore | May 10, 2013 |
- RSS Feeds
- Making Linux and Android Get Along (It's Not as Hard as It Sounds)
- Using Salt Stack and Vagrant for Drupal Development
- Dynamic DNS—an Object Lesson in Problem Solving
- New Products
- Validate an E-Mail Address with PHP, the Right Way
- Drupal Is a Framework: Why Everyone Needs to Understand This
- A Topic for Discussion - Open Source Feature-Richness?
- Download the Free Red Hat White Paper "Using an Open Source Framework to Catch the Bad Guy"
- Tech Tip: Really Simple HTTP Server with Python
Enter to Win an Adafruit Pi Cobbler Breakout Kit for Raspberry Pi

It's Raspberry Pi month at Linux Journal. Each week in May, Adafruit will be giving away a Pi-related prize to a lucky, randomly drawn LJ reader. Winners will be announced weekly.
Fill out the fields below to enter to win this week's prize-- a Pi Cobbler Breakout Kit for Raspberry Pi.
Congratulations to our winners so far:
- 5-8-13, Pi Starter Pack: Jack Davis
- 5-15-13, Pi Model B 512MB RAM: Patrick Dunn
- 5-21-13, Prototyping Pi Plate Kit: Philip Kirby
- Next winner announced on 5-27-13!
Free Webinar: Hadoop
How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers
Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.
Some of key questions to be discussed are:
- What is the “typical” Hadoop cluster and what should be installed on the different machine types?
- Why should you consider the typical workload patterns when making your hardware decisions?
- Are all microservers created equal for Hadoop deployments?
- How do I plan for expansion if I require more compute, memory, storage or networking?




46 min 16 sec ago
5 hours 59 min ago
9 hours 11 min ago
11 hours 26 min ago
11 hours 54 min ago
12 hours 53 min ago
14 hours 21 min ago
15 hours 30 min ago
16 hours 16 min ago
22 hours 52 min ago