Aug
26
2014
0

dump1090 binary built for Raspberry Pi / Arm

If you’re after a binary of dump1090 for the Raspberry Pi without having to build it, here’s a compiled binary for you.

I built it on Arch linux, but it also works on Raspbian, or likely any other Arm processor as well.

It’s version 1.09.0608.14 of the MalcolmRobb fork

You can download it from here: (more…)

Nov
13
2010
0

Converting PDF files to HTML on Ubuntu

It’s very easy to convert PDFs to HTML on Ubuntu.

The command is pdftohtml
(more…)

Written by John in: Linux Tips |
Nov
10
2010
0

Downloading routes from a GlobalSat DG-100 with gpsbabel on Linux

This is a GlobalSat DG-100

It’s an amazing piece of Kit, but the software that comes with it is absolutely rubbish.

You can download all of the routes (and delete them from the unit) in one simple command with gpsbabel.

gpsbabel -t -i dg-100,erase -o gpx /dev/ttyUSB0 outputfile2.gpx

You’ll still need to set up the times/distance for recording for the switch positions A,B & C. I have mine set to 1,5 and 10 seconds. Easiest way to set these up is on a windows machine with DG Manager.

Written by John in: General Randomness,Linux Tips,Tips |
Oct
17
2010
0

Stopping Javascript from resizing the window in Firefox

One of my pet hates on the internet is shopping sites which resize the window when you’re looking at a zoomed in image. Not all of us still use a windowed browser, in fact, most people now use a tabbed one.

Here’s how to stop javascript from taking control of your window size in firefox….
(more…)

Written by John in: Linux Tips,Mac OS X Tips,PC Tips |
Jun
07
2010
0

Selective colour replacement with imagemagick

Selective colour replacement is easy from the command line with imagemagick.

You can download imagemagick from http://www.imagemagick.org/

The following will replace all red (#FF0000) pixels with blue (#0000FF)

convert sourceimage.png -fill "#FF0000" -opaque "#0000FF" destimage.png
Apr
25
2010
0

WordPress Super Cache plugin – Performance Benchmarking

I’ve been doing some performance tests on WordPress to see how much of a difference the WordPress Super Cache plugin made.

It turns out that the plugin makes a huge difference. (more…)

Written by John in: General Randomness,Linux Tips,PC Tips,Tips |
Apr
22
2010
0

WordPress not sending emails on ubuntu – nrcpts=0

So, you’re using sendmail to try and send emails from php/wordpress and it’s not working?

Are your mail logs (/var/log/mail.log) showing nrcpts=0 ??

Make sure the sendmail_path in your php.ini file (/etc/php5/apache2/php.ini) is set up correctly.

It should probably be…

1
sendmail_path = /usr/sbin/sendmail -t -i
Written by John in: Linux Tips,Tips |
Apr
22
2010
0

WordPress, Permalinks and 404 errors

This page has the permalink /2010/04/wordpress-permalinks-and-404-errors But internally its default URL is /?p=1495.

Permalinks help people see the topic of a page before it’s visited and generally mean that search engines will rank them higher too.

OK, so you’re getting 404’s as soon as you enable permalinks other than the default?
(more…)

Written by John in: Linux Tips |
Jan
27
2010
0

Plugging in headphones doesn't mute speakers in Ubuntu

I upgraded to Ubuntu 9.10 in early December, but yesterday was the first time I tried to use headphones since then.

It turns out that plugging headphones into the headphones socket doesn’t automatically mute the speakers anymore.

Here’s a fix.

Open a terminal (Alt+F2 > gnome-terminal)
alsamixer (enter)
Use the arrow keys (left/right) to highlight Headphon
Press ‘m’

This should fix it. You can now hit Esc to exit and exit the terminal.

Written by John in: Linux Tips |
Jan
18
2010
1

Ubuntu Software Centre – Not available in the current data

If you get the error “Not available in the current data” in the Ubuntu Software Centre, try opening a Terminal and running this:

sudo apt-get update

Update: This should also fix the error “Not available for your hardware architecture” as well

Written by John in: Linux Tips |