tgharold.com: Tech Blog

We're developing an application at work where the backend system is very limited on what characters it will accept over the wire as well...

While I love mdadm (software RAID), it's perplexing me at the moment as it keeps changing its device number under Ubuntu.  When I create...

My favorite file-level backup tool for Linux (or OS X or Cygwin) is still  borg  (a.k.a. borgbackup).  The features that I rely on are: E...

Since mid-September, we have been hunting a problem that occurs for our Thunderbird users when they attempt to send email via the Office 365...

I've been running Linux Mint 17.2 (mostly) happily on my old 2007 Thinkpad T61p.  However, even with 8GB of RAM and a SSD, it was a bit ...

One of the difficulties that I've run into while setting up the VM for Win7 on my Linux Mint laptop is that the Windows Update service w...

I've been wanting to try and switch to Linux full-time on my home desktop/laptop machines for a while, and the amount of spyware / track...

There's a wrapper project for Attic / Borg backup called " Atticmatic " on GitHub.  It helps simplify the process of doing dai...

You will need to install the "openssh" package using the Cygwin installer before doing this. Notes: In the near future, OpenS...

On my current virtualization server running Linux KVM (QEMU), I want to shutdown all guests so that I can unmount the file system containing...

I've used Cygwin with rdiff-backup before to backup a Windows box to a backend Linux server over SSH, but given the success that I'...

Since installing pfSense and setting up the NTP server, I've been wondering for a while what the difference is between "System Jitt...

This is a follow-up on my earlier post about the Lenovo M58p (Intel Core2 Duo E8400 @ 3GHz) that I'm using for my home firewall.  It cl...

File this one under "things I wish I had known sooner".  When setting up pfSense firewall rules on an interface, you'll run in...

Part of my backup strategy is to write my backups to external USB drives which are protected by LUKS encryption.  However, before I will put...

One of the experiments that I'm running with the new network is running an open / unsecured WiFi hotspot for the neighbors. Some of th...

A rough power estimate for my little SFF (small form factor) refurbished PC that I'm using for a pfSense firewall: Intel Core2 Duo E8...

According to the pfSense dashboard, I have: Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz 2 CPUs: 1 package(s) x 2 core(s) When running a ...

As part of setting up my new home network, I'm experimenting with VLANs.  The pfSense firewall has the following user-defined VLANs on t...

After a while, unless you are using Puppet or some other tool, your ~/.ssh/authorized_key file will end up with half a dozen or dozens of di...