Best of Technical Support
I have searched through all of the suggested resources and have been unable to find an answer. How can I set up kermit or Linux so that they can talk to each other? I am trying to use ckermit 6.0.192 to dial a pager, and I get the message “Warning: terminal type unknown ...” each time I start up kermit.
Once I get to kermit and try to dial a number, I get the error message “unable to initialize modem”. I have used minicom to dial my modem and it works fine, but the application (Big Brother) which uses the modem is set up to use kermit. —John Willoughby, firstname.lastname@example.org
Try to force the TERM variable to vt100 before starting kermit:
At the kermit prompt, try this sequence (I am assuming /dev/modem is a correct link to your modem device):
set line /dev/modem set speed 57600 connect atdt...
This works fine for me. —Pierre Ficheux, email@example.com
I am a newbie at installing Linux so I am not quite sure what I may be doing wrong. Here is my problem:
I am trying to install Red Hat on my machine, which currently has Windows 95 on it. I have a 6.4GB hard drive and I have used Partition Magic to free up about 2GB of space. Windows 95 is on three partitions; one of those is an extended partition. I decided to use Disk Druid to make the Linux partitions because I am not totally familiar with fdisk. I first made a root partition, which worked fine, but if I try to create any other partitions, I get an error with unallocated partitions and the reason is “no free primary”.
I don't really want to format my hard drive, but if it comes to that, so be it. —Ben Barth, firstname.lastname@example.org
You may only have four primary partitions on your hard drive. If you need more, you can make an extended partition instead of a primary. Under DOS, this is how logical drives are created. Linux has no problem residing on an extended partition, so you should be able to install it once you create the extended partition. Remember that you will probably want to make two: one for the file system and one for the swap space (usually about twice your system RAM in size). —Chad Robinson, email@example.com
How do I run a new application or install it into X? For instance, my Red Hat bundle had a CD with lots of software on it. I used RPM to install Word Perfect 7.0. Now I have an /opt directory with a /wp70 directory under it and a bunch of subdirectories under it. Which one is the executable? What magic word or process am I missing to make WP run? All the files seem to be there. This is the first question I haven't figured out, and I have spent a lot of time trying. My system is working great but this is just too nebulous for me. —Sean Wyatt, firstname.lastname@example.org
Usually, applications that install in /opt install a link to their binary in /opt/bin. So, all you should need to do is put /opt/bin in your PATH. In the /etc/profile file, you can add:
PATH=/opt/bin:$PATH export PATH
Should the executable be absent from /opt/bin, you can locate it using:
find /opt/bin -follow -type f -perm -700
then create a link yourself and add whichever directory it lies in, to your PATH. —Marc Merlin, email@example.com
After recompiling the kernel, I get a message along the lines of:
modprobe: cannot find net-pf-4 modprobe: cannot find net-pf-5
at various times. It does not seem to affect the behavior of the system, but I would like to know what it means and what I should do about it. —Frank McCabe, firstname.lastname@example.org
net-pf-4 and net-pf-5 refer to support for IPX and AppleTalk, respectively. You can avoid the modprobe messages from appearing at boot time by including aliases for each in /etc/modules.conf (or /etc/conf.modules), i.e., add these lines to the file if they are not already there:
alias net-pf-4 off alias net-pf-5 off
Most of this information can be found in /usr/src/linux/Documentation and I would recommend becoming familiar with the resources in this directory. Note: /usr/src/linux is just a symbolic link to your current source tree of the Linux kernel. —Andy Bradford, email@example.com
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!
- SUSE LLC's SUSE Manager
- Managing Linux Using Puppet
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Tech Tip: Really Simple HTTP Server with Python
- Returning Values from Bash Functions
- Rogue Wave Software's Zend Server
- Doing for User Space What We Did for Kernel Space
- Parsing an RSS News Feed with a Bash Script
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