Best of Technical Support
I am facing a problem with COAS. I can't open the user creation tool. I deleted all lock files but still can't open this tool. What is the problem? —Anil Nair, email@example.com
This is a well-known issue covered in FAQs. Basically, you need to remove /etc/shadow- and /etc/ptmp. For details, do a search for COAS at http://support.calderasystems.com/. —Andy Bradford, firstname.lastname@example.org
I have a Wordperfect CD and am trying to install it. I have made a Wordperfect subdirectory. Then I issue the following command, to begin installation:
The error message I receive is as follows:
bash: mount/dev/cdrom/cdrom: No such file or directoryI switched to the CD-ROM subdirectory and issued the following command:
darkstar:/cdrom# mount/dev/cdrom/cdrom--Larry Carnahan, email@example.com
Are you sure /dev/cdrom is a symlink to a real CDROM block device such as /dev/hdcx ? Try:
ls -l /dev/cdrom
--Pierre Ficheux, firstname.lastname@example.org
Try this: mount /dev/cdrom /cdrom instead of mount/dev/cdrom/cdrom. Mount is the command, /dev/cdrom is the device and /cdrom is the directory. Between these three entities, there should be a space. —Paulo Wollny, email@example.com
I installed an apache 1.3 from a Debian package. I used the command apachectl start and it sent me the following message:
Cannot determine local host name. Use the ServerName directive to set it manually.
What is the ServerName directive? I found a line about ServerName in the httpd.conf; is that what the message meant? I tried to set ServerName to root, then 127.0.0.1, then localhost, then daniel54 (the name of my machine at the prompt): nothing works. Apache gives no useful message; it just tells me httpd won't start. Is there a way to deactivate the Ethernet card without removing it physically? —Daniel Meilleur, firstname.lastname@example.org
You're on the right track—ServerName is indeed in httpd.conf. You need to give it a name to run as that matches a DNS entry. The easiest way to do that is to set up /etc/host.conf with an order hosts,bind line to force it to look in the hosts file first. Then set up /etc/hosts with a line that reads 127.0.0.1 localhost daniel54. You can deactivate a network card at any time by typing ifconfig eth0 down, replacing eth0 with the appropriate value if you want to shut down eth1 or higher. —Chad R. Robinson, email@example.com
Is there any method of installing Linux to operate as a Dumb Terminal so that the PC boots into Linux, auto logs on and launches a pre-configured application?
My idea is to configure some Thin-Client workstations using Linux as the OS and Citrix ICA client as the only application.
Ideally, the PC would boot to Linux, log in as a dummy user and launch the Citrix ICA client. —Stefan Ostadal, firstname.lastname@example.org
You can do this simply by understanding how INIT works. When you boot your system normally, INIT will read /etc/inittab, which tells it to execute certain scripts. It also tells it to start a few getty processes, which allow you to log in. All you need to do is add an entry that runs your application, rather than getty. Note that INIT itself is already logged in as root, so there's no need to execute log in in this case. Please note that this is a terribly insecure method of operating, so it's advisable ONLY for your specific case—a thin client for which local security means nothing. —Chad R. Robinson, email@example.com
I have 4.0 gigabyte HD that is running Linux right now. How can I install Windows98 and have a dual boot system? —Navin Maahdkar, firstname.lastname@example.org
The easy way would be to boot with a Linux or Windows CD (or disk) and use fdisk to create a FAT32 partition for Windows and ext2 and swap partitions for Linux. You could then install Linux and Windows98 in the order you prefer. One warning though: if you plan to install Windows after Linux do not forget to create a Linux boot disk in order to reinstall LILO in the MBR and be able to dual boot again. The Windows installer will erase it. The “hard” way would be to use Partition Magic to rearrange the +space without having to reinstall Linux again. Be sure to make a backup before doing either. —Mario Neto email@example.com
You need to have some space on your HD to install Win98 in the first partition. If not, you should install Win98 on another disk defined as master (or re-install everything!). Then you should configure LILO to set up dual boot. Something like this in the /etc/lilo.conf:
boot=/dev/hda map=/boot/map install=/boot/boot.b prompt timeout=50 linear default=linux image=/boot/vmlinuz-2.2.14-5.0 label=linux initrd=/boot/initrd-2.2.14-5.0.img read-only root=/dev/hdb1 other=/dev/hda1 label=dos
Please check out the LILO mini-how-to to get more info. --Pierre Ficheux, firstname.lastname@example.org
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
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.
Free to Linux Journal readers.Register Now!
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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