Category: Software

Results with btrfs and zfs

December 7th, 2013, 20 Comments

The recent news that openSUSE considers btrfs safe for users prompted me to consider using it. And indeed I did. I was already familiar with zfs, so considered this a good opportunity to experiment with btrfs. btrfs makes an intriguing filesystem for all sorts of workloads. The benefits of btrfs and zfs are well-documented elsewhere. […]

Why are we still backing up to hardlink farms?

October 12th, 2013, 8 Comments

A person can find all sorts of implementations of backups using hardlink trees to save space for incrementals. Some of them are fairly rudimentary, using rsync –link-dest. Others, like BackupPC, are more sophisticated, doing file-level dedup to a storage pool indexed by a hash. While these are fairly space-efficient, they are really inefficient in other […]

Voice Keying with bash, sox, and aplay

August 24th, 2012, No Comments

There are plenty of times where it is nice to have Linux transmit things out a radio. One obvious example is the digital communication modes, where software acts as a sort of modem. A prominent example of this in Debian is fldigi. Sometimes, it is nice to transmit voice instead of a digital signal. This […]

How to get started programming?

July 28th, 2012, 10 Comments

I have been asked for advice from several people recently on how to get started programming, or how to further develop a nascent interest in coding or software engineering. The people asking the questions range in age from about 10 years old to older than me. These are people that, for various reasons, are not […]

Decisions on Listening to Music

July 8th, 2012, 6 Comments

A couple of days ago, I commented about my thoughts on finding a better way to listen to music, and asked for suggestions. I’ve checked out the avenues suggested, and here are my thoughts so far. Streaming service: Spotify Of the streaming service offerings, Spotify seems the most compelling. It has both Linux and Android […]

How to listen to music?

July 6th, 2012, 12 Comments

This seems like a simple question: how do you listen to music? But in a way, I think I’ve fallen behind the times. I’ve enjoyed listening to digital music for years, since well before MP3 even existed (MIDI files could be comfortably downloaded over dialup; some of you may even remember MOD files). Anyhow, a […]

Windows & a dying hard disk: Solving with Linux

June 14th, 2012, No Comments

Today, my workstation sent me this email: The following warning/error was logged by the smartd daemon: Device: /dev/sda [SAT], 1 Currently unreadable (pending) sectors and then a little later, this one: The following warning/error was logged by the smartd daemon: Device: /dev/sda [SAT], 1 Offline uncorrectable sectors From the hard disk’s SMART data, this is […]

How to debugging Linux failure to resume from suspend?

June 14th, 2012, 17 Comments

I’m running a computer with a Gigabyte Z68A-D3H-B3 motherboard, and have never been able to get it to properly resume from suspend to RAM in Linux. It has worked fine on the rare occasion I’ve tried it in Windows 7. My somewhat limited usual for debugging aren’t particularly helpful. The system appears to suspend perfectly […]

Shell Scripts For Preschoolers

February 10th, 2012, 5 Comments

It probably comes as no surprise to anybody that Jacob has had a computer since he was 3. Jacob and I built it from spare parts, together. It may come as something of a surprise that it has no graphical interface, and Jacob uses the command line and loves it — and did even before […]

Weather Station Excitement

August 24th, 2011, 4 Comments

I’ve sort of wanted a weather station for a long time. Lately, the ham radio hobby has intensified that, and I finally got one. When I finally got the serial link cable yesterday, well I was perhaps irrationally excited. Terah accused me of running all around the house while gathering up stuff for it. That […]

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