Penguins-On-Hudson

Linux & F.O.S.S. in the Hudson River Valley.

Penguins-On-Hudson is an advocacy program sponsored by Codefix Consulting to help promote Linux and F.O.S.S. (Free Open Source Software) in the lower Hudson River Valley.

Archive for the 'Ubuntu' Category

Automount USB drives on Ubuntu servers.

Wednesday, January 20th, 2010

In most cases, Ubuntu desktop systems will automatically detect and mount removable media, and this is largely done with software that is part of the X Windows system; for server systems without X Windows however, this sort of thing requires a bit of work.
Now some may ask, “Why automount removable media at all?” It is […]

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Diagnosing Sound Problems in Ubuntu Linux

Saturday, January 2nd, 2010

Sound problems fall in to three basic categories, and the first thing you want to do is determine which one you’re dealing with. The easiest thing you can do is test your speakers with something else, using the same cable. If your speakers and cable are confirmed to be in good working order, then the […]

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SSH Coolness … even on Windows.

Saturday, December 26th, 2009

prerequisite concepts: prelude, basic config., port fwd, proxy conn.

I don’t often have the opportunity to experiment on computers running Windows, but every once in a long while it simply cannot be avoided. I recently found myself wanting to look up a password in Revelation, a password manager for the Gnome Desktop on Linux; I […]

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AppArmor, introduced to Ubuntu with Gutsy, is yet another security tool unleashed upon the infosphere. In part, AppArmor is intended as an alternative to SELinux, which can easily be seen as daunting to configure; unfortunately, many such projects are daunting for those admins forced to walk the plank of unfamiliarity above a sea of expectations. […]

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When in doubt, test.

Monday, January 14th, 2008

Shortly after I last upgraded my mail server, one user reported that his mail client was failing to connect with the message:
“Unable to connect to your IMAP server. You may have exceeded the maximum number of connections to this server…”
He was the only one known to be having this issue, so after a cursory check […]

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Quick and Easy Caller ID on MythTV

Monday, December 31st, 2007

I have resisted the urge to display caller id on my MythTV as somewhat obvious. I’m always looking for ways to demonstrate the freedom which comes from using open source software, but I prefer the zesty freshness of an original idea rather than anything that’s been done, redone, and done again. My wife, however, […]

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Linux Bane

Monday, October 15th, 2007

While I was cooking last night’s dinner, I made the mistake of leaving my laptop running, open, and unattended. Because ours is primarily a Linux household (my wife is a Mac user), I normally don’t worry much about the computers. The servers, devices, and desktops tend to chug along without needing anything more than […]

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Multiple Recipient Delimiters in Postfix

Wednesday, August 29th, 2007

Some time ago I enabled recipient delimiters (e.g. user+foo@host.tld) as a convenient way to know if shady web forms are contributing to my spam folder. The idea is that when House Depot requires me to have an account before I can see if they have loose screws in stock locally, I can sign up […]

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Spam War Chronicles: SARE Ninjas

Tuesday, July 17th, 2007

S.A.R.E. Ninjas are the folks over at SpamAssassin Rules Emporium who act as sort of an arms dealer in the Spam War: they publish custom rules and plugins for SpamAssassin, the Open Source world’s powerful anti-spam software. This article is about an imminent software release that promises big trouble for spammers.

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Dell Agress with Codefix

Thursday, June 7th, 2007

Dell didn’t ask but if they had I would have told them that Ubuntu Linux is a good choice. I have generally refrained from the usual histrionics whenever something Linux-ish makes the news, but I’d would like to voice a couple remarks regarding Dell’s Ubuntu announcement.
While I’m always happy to see Linux reaching a wider […]

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