If you are install Grub – you will might be given the choice of: The answer is to install it on /dev/sda Note – If you install grub on a partition (such as sda1) it will only work if you are are chain-loading your bootloader.
If you are creating a KVM host you can sometimes get the error such XML error: expected unicast mac address. Basically, you if you have manually entered a mac address which meets the Unicast standard then it will cause problems. Here is a quick way of generating a proper MAC Address:
This is the settings that worked for me when running gource xvfb-run -a -s “-screen 0 1280x720x24” gource -s 0.4 -p 0.01 -1280×720 –auto-skip-seconds .4 –multi-sampling –stop-at-end –highlight-users –hide mouse,progress,filenames,dirnames –file-idle-time 0 –background-colour 111111 –font-size 20 –title “Omlet Lib 4_1” –output-ppm-stream – –output-framerate 60 | avconv -y -r 60 -f image2pipe -vcodec ppm -i – … Read more
There is a method of hacking php using a security flaw in php in how it handles exif meta data embedded in jpeg, png or gif images. You describe this as an EXIF injection attack. As a precaution it is a good idea to strip all EXIF information from any images that are uploaded to … Read more
Optipng is in the Ubuntu repositories but is you want an up to date version then it can be worth installing Optipng from source. This is essentially a script but you can use the commands on there own if you want.
I just wanted to review Pokki – Windows 8 start menu replacement which I installed to replace the deeply broken Windows 8 Metro interface. Pros It is free Cons It is really slow and takes ages to load up. It has privacy problems – i.e. it records everything you type into the search and send … Read more
I hate the Metro interface that Windows have introduced in Windows 8. It is totally confusing to have both the desktop and Metro to launch applications from. Basically, the solution is install: Start8 This basically fixes Windows.
If you need to install Postgres 9.3 with development headers (i.e. so that you can compile extensions to Postgres) then hopefully this post can help you. Firstly – don’t use the official Postgres PPA because it only provides binaries and not sources. So, use Chris-Les Postgress PPA found here: https://launchpad.net/~chris-lea/+archive/postgresql-9.3 I hope this help someone.
If you have just installed Postfix or Sendmail it can be helpful to test if everything is configured correctly. Often you want to do this from the commandline without having to install an entire email client. You can do this by installing a few simple command line mail utilities. Then pipe a message to the … Read more
I upgrade one of our servers from Ubuntu 13.04 to Ubuntu 13.10 and immediately one of the apache sites went wrong. It is was an odd problem because the Apache configuration had not changed and there was nothing unusual about it. I was getting and SSL error like so: It turns out that all I … Read more