Best of Technical Support
I am having trouble getting Netscape to run on Linux. I have Windows NT in the first 4G and installed Linux in the remaining 4G partition. Linux detects the Ethernet card when first installed, but when I log off to use NT and then go back to Linux, Linux no longer sees my Ethernet card. It gives me a “domain not bound” error. I would like to know what is happening. —Yong, firstname.lastname@example.org
Netscape is known to have lots of bugs and problems and not only with Linux in my experience. I recently reinstalled the 4.75RPMs (from the Red Hat ftp site) and, as of now, there seem to be fewer problems, especially related to Java. It is still quite usual for the first process of Netscape to die, but new instances of the program will run fine. Regarding your Ethernet card, you do not mention the brand/model, but I solved a similar problem by turning off the PnP feature of a 3Com 3c590 Ethernet card and, under Windows, making it work as ISA or EISA. Linux worked fine after that. —Felipe E. Barousse Boué, email@example.com
I am setting up a cable modem. I have a 10/100 Ethernet card running at full duplex. How do I lock the card to 10MB and half duplex? Is this in the “hwconf” file? If so what does the syntax look like? Any additional help is appreciated. Also, I am running a RCA Cable Modem. —David A. Bower, firstname.lastname@example.org
You do not specify the brand of Ethernet card you have. But, usually there is a diskette that comes with the card (or you can download it from the card manufacturer's site) that allows you to turn off the Plug-and-Play and duplexing features of the card. Bear in mind that for some cards this change doesn't really do anything to the behavior of the card, in respect to Linux at least. I would suggest looking at the Ethernet-HOWTO at www.linuxdoc.org/HOWTO/Ethernet-HOWTO.html where you can find additional information about your specific card's settings. —Felipe E. Barousse Boué, email@example.com
Cable modems can be frustrating because they often use a form of DHCP designed for Windows systems only. Setting your card to run half duplex may help and can be done by using the driver as a module rather than as a built-in driver. Then use insmod mydriver.o full_duplex=0. Note that there are a few cards that do not support this parameter. I have had problems even after doing that. To get my cable modem working under Linux, I had to specify ALL of the following switches on the command line of “dhcpcd”: -r -h myhostname.in.windows -I 1:xx:xx:xx:xx:xx:xx -l 3600 eth0. This tells the program to use the RFC1541 (obsolete) protocol, to specify the host name (which you can get by running WINIPCFG from your working Windows system), and to specify the Ethernet address and card (from the same machine; may not be required for you). —Chad Robinson, firstname.lastname@example.org
My machine is set up to dual-boot Red Hat Linux 6.2 and Windows 98. When it boots to Windows 98, the Num Lock stays on, but when it boots to Linux, the it goes off. Is there a way to change this behavior so I don't have to press the Num Lock key each time I start Linux? —Michael Kaneshige, email@example.com
If you are working in text mode, look at the man page for the setleds command. In one of the initialization scripts, let's say /etc/rc.d/rc.local, add something like:
for i in 1 2 3 4 5 6 7 8 dosetleds -D +num < tty$i done
This will turn on Num Lock by default when booting up your system. If you are using a Graphic User Interface, there is usually an Options setting specifically for the Num Lock status at boot time. —Felipe E. Barousse Boué, firstname.lastname@example.org
You can add these commands to your /etc/rc.d/rc.local boot script:
INITTY=/dev/tty[1-8] for tty in $INITTY; setleds -D +num < $tty done
--Pierre Ficheux, email@example.com
I'm installing Red Hat 6.1 on a laptop. How do I get it to read/load the pcmcia card and not the eth0? —Anthony G., firstname.lastname@example.org
You should look at the /etc/rc.d/rc3.d/* startup scripts to see the order in which the pcmcia and eth0 boards are initialized. Renaming the files with higher or lower numbers (S10xxxxx, S20xxxx, etc.) will redetermine that order. Many startup services are stored there, so be careful when playing with these files. Also, check the chkconfig --help command, so you can turn one service on and the other off. Lastly, to manually initialize or stop the pcmcia or Ethernet boards, use the commands:
/etc/rc.d/init.d/pcmcia [stop|start|restart]ifdown eth0 ifup eth0
--Felipe E. Barousse Boué, email@example.com
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
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|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- SUSE LLC's SUSE Manager
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Google's SwiftShader Released
- SuperTuxKart 0.9.2 Released
- Doing for User Space What We Did for Kernel Space
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide