I haven’t had much time to look into this, but one of the mailservers I administer is typically configured to relay through mail.lig.bellsouth.net, with mail.averyjparker.com as a fallback. Sometime overnight, mail.averyjparker.com started getting heavy use and on checking this morning was getting all of the outbound traffic. So, I did a bit of investigation mail.lig.bellsouth.net is no longer found and I’ve switched the configuration to mail.bellsouth.net and all is churning along well.
Tag: time
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Preparing for disaster recovery – system change log
There are a lot of elements to a good disaster recovery strategy…. knowing where offsite backups are located, keeping the offsite backups fresh. Knowing where any ON-site backups are. Having a plan for quick access to replacement hardware. One that probably is easily overlooked is very low-tech. That’s a system log. I don’t know that this isn’t a BAD idea for any system, but certainly is a good idea for servers and other “mission critical” systems. (In thinking about my desktop, this kind of log wouldn’t be bad….maybe a bit obsessive with a desktop, but…. I think I’ve messed it up more times than it’s spontaneously had problems…) So what am I rambling on about this time?????
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Juice – formerly ipodder podcast client for Linux (Windows and Mac too…)
I’ve been playing around a bit with podcast clients the last couple of days. I’ve been finding online news feeds for the onlineradiotv.com site and for many of those I have bash scripts to handle downloading or streaming the audio available from shortwave broadcasters. I did run across a few podcasts too though and thought it might be time to take another look at linux podcasting clients…
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Using the command line in linux – part 4
Dealing with text…. we’ve looked at a couple of basics on logging in and starting to use the command line and hopefully not feeling too helpless there… we’ve seen ways to navigate directories and how to find new commands and how to find out more about how to use them. Now it’s time to talk about how to manipulate (work with) text files. Most every important configuration file in linux is text based and editable from the command line. This can be a VERY good thing at times, or very intimidating if you’re not comfortable with a command line environment. It’s worth noting that you CAN edit configuration files with a graphical interface text editor….
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Using the command line in linux – part 3
Now that we’ve logged in and learned how to move from one directory to another (and find where we are if we get lost…) it’s probably time to start learning how to find out about other commands. Well, if you press tab at the command line you will likely see something that starts like this….
$
Display all 4601 possibilities? (y or n)
and if you answer with a “y” you will see a long list of programs that could be run. That’s not usually the best way to find a program though. -
Using the command line in linux – part 2
This is part two in a series of “how to use the command line in linux” style articles…. these are intended to be quite basic for those that have not used a command line before…. In part one we logged in (if necessary) and found out about the help command, navigated a bit with the arrows and exit -ed from our login. This time we’ll try to learn a bit more about dealing with files and navigating. In a graphical interface, if you browse files, you’re presented with a list of files and folders for a directory that you can scroll through and read at your leisure. In the command line we have to tell the computer to list the files and folders for the directory that we’re currently “in” to list those in linux, we use the ls command….
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Using the command line in linux – part 1
I know many people get intimidated with a black screen, white text and blinking cursor. No mouse, not knowing where to start…. well, I’m going to spend a bit of time in this article trying to help show you how to survive the command line in linux. For starters, don’t think that linux is a command line only operating system. In some installs, the administrator may not want a gui, but there are some VERY functional and full featured graphical interfaces for linux. For me though, if you know what you want to accomplish, the command line can be a much more efficient way to “get the job done” for many tasks.
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Scheduling tasks in linux – the at command
I did an article a while back about cron and scheduling tasks in linux (I also mentioned kron which is a graphical interface for cron scheduling…). That works well and good for things that happen on a recurring basis, but the next question is what if I want to schedule a command (or series of commands) to happen once and not again? Well, to tell the truth I’ve used cron for this on occasion, being sure to revisit the crontab and remove the entry before it repeats again, but there is a better way. At.
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Urgent AOL update
This sounds like a serious vulnerability. The SecurityFix is reporting on a very serious vulnerability in AOL.
The problem affects AOL version 8.0, AOL version 8.0+, and AOL version 9.0 Classic.
The vulnerability could allow a remote attacker to take control of a users PC. Basically, all that would be needed is for the AOL user to visit a specially crafted web page.
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Winter Olympics 2006 Turin Italy – technology wibro/wimax
The 2006 Winter Olympics are coming up. This time around, the olympics are being held in Turin, Italy. The official site can be found here. I can’t say that I’ve been a huge fan of the Olympics, but there are things that interest me. First is the security environment. Obviously the Olympics is a high-profile event and unfortunately has been the target of trouble before. I can’t help but have a concern (and prayer) that the security will be clamped down in such a way that all the events go off smoothly and that sport is the main story for their run. Of course, the next thing on my mind is the technology aspect…. from this announcement