Category: Linux

Debian-Live Rescue image with ZFS On Linux; Ditched btrfs

January 22nd, 2014, 10 Comments

I’m a geek. I enjoy playing with different filesystems, version control systems, and, well, for that matter, radios. I have lately started to worry about the risks of silent data corruption, and as such, looked to switch my personal systems to either ZFS or btrfs, both of which offer built-in checksumming of all data and […]

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 […]

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 […]

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 […]

A 4-year-old, Linux command line, and microphone

July 30th, 2011, 4 Comments

There are certain times when I’m really glad that we have Linux on the house for our boys to play with. I’ve already written how our 4-year-old Jacob has fun with bash and can chain together commands to draw ASCII animated steam locomotives. Today I thought it might be fun to install cw, a program […]

A Proud Dad

March 16th, 2011, 12 Comments

I saw this on my computer screen the other day, and I’ve got to say it really warmed my heart. I’ll explain below if it doesn’t provoke that reaction for you. So here’s why that made me happy. Well for one, it was the first time Jacob had left stuff on my computer that I […]

Unix Password and Authority Management

January 31st, 2011, 6 Comments

One of the things that everyone seems to do different is managing passwords. We haven’t looked at that in quite some time, despite growth both of the company and the IT department. As I look to us moving some things to the cloud, and shifting offsite backups from carrying tapes to a bank to backups […]

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