Keeping Data on SSDs fresh for a long time
How i refresh SSDs so they keep their data even when unpowered for a long time
Posted on 2026-02-01
Linux
How to fix file permissions on debian
A guide on how to restore file permissions on a Debian system after a failed migration where permissions were not preserved, using a series of chmod, chown, and aptitude reinstall commands.
Posted on 2014-06-13
Migrating Sonar to a different host
A set of notes on how to migrate a SonarQube installation to a new host, including steps for installing SonarQube and PostgreSQL, and migrating the database and extensions.
Posted on 2014-01-30
Installing/Upgrading flash on Ubuntu behind a proxy
A workaround for installing or upgrading the Adobe Flash plugin on Ubuntu when you are behind a proxy that the installer doesn’’t respect, by downloading the plugin manually and serving it from a local web server.
Posted on 2013-10-01
How to rename/merge projects in sonar
A guide on how to rename or merge projects in SonarQube by directly manipulating the PostgreSQL database, for when you need to preserve the history of a project after renaming it.
Posted on 2013-06-03
How to mount an iPod in linux
A short tutorial on how to mount an iPod on a Linux system using ifuse to access the device’’s file system.
Posted on 2013-05-12
First steps on a new postgresql installation
A quick guide for getting started with a new PostgreSQL installation, showing how to access the psql shell and create a new superuser.
Posted on 2013-05-12
Resizing VirtualBox Drives
A quick guide on how to resize a VirtualBox disk image (.vdi) and then use gparted to resize the partition within the virtual machine.
Posted on 2013-05-06
Using awk to remove lines from a file
A shell one-liner that uses awk to remove lines matching a specific pattern from all files within a directory structure.
Posted on 2013-03-14
Quality loss when saving as JPEG
A post that debunks the myth that saving a JPEG multiple times at 100% quality does not degrade the image, with a script to demonstrate the quality loss.
Posted on 2013-01-02
Tanuki Software's Java Service Wrapper and your Environment Variables
A description of a problem with the Tanuki Software Java Service Wrapper where the $HOME environment variable is not correctly set when the service is started as root but runs as a different user, and a solution provided by the Tanuki support team.
Posted on 2012-12-21
Automatically switch your mvn settings
A simple shell function to automatically switch between different Maven settings.xml files based on the current network environment, useful for when you’’re moving between work and home.
Posted on 2012-10-18
Mercurial and self-signed server certificates
A guide on how to configure Mercurial to accept a self-signed SSL certificate from a repository by adding the certificate’’s fingerprint to the ~/.hgrc file.
Posted on 2012-10-13
The simplest way to create pdf's from images
A one-line command using ImageMagick’’s convert to easily create a PDF file from a series of images.
Posted on 2012-07-01
Using StarCluster for some heavy computing
A walkthrough of using StarCluster on Amazon EC2 to set up a computing cluster for batch-processing a large number of photos with ImageMagick.
Posted on 2012-06-17
Local postfix as relay to Amazon SES
A quick guide for experienced Linux users on how to set up a local Postfix server to act as a relay to Amazon Simple Email Service (SES).
Posted on 2012-06-08
The simplest backup solution ever...
A simple backup solution using a Groovy script to generate rsync commands for backing up files from multiple remote hosts.
Posted on 2010-11-17