Leffen.net

Git ignore windows

Posted on 2011/12/08 by leffen

Note to self of git config on widows for excluding files

1) git config –global core.excludesfile ~\.gitignore
(To be sure change ~ with the actual directory)

2) Content of .gitignore for avrstudio projects

*\debug\*
*\release\*
*.tmp

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Windows 7 Git client against Github.com

Posted on 2011/12/07 by leffen

1) Use puttygen to generate a new key.
I prefere to use SSH-RSA and 4096 as the key size, it feels more secure.

2) Save the private key.
Remember one key for each machine. For security reasons do not reuse between machines. Remeber to set password on the private key.

3) Copy the generated public key to clipboard

4) Insert the public key into the github ssh public keys.
Name it as the machine.

5) Start pageant and add the private key.

6) Download and install git.
Select plink as connection method.

7) Recognize Github.com as a legal host use Putty.
Run Putty
Host name: github.com
Protocol: ssh
Open
[Kill putty]

And now you should be ready to work against github from windows. At least this worked for me.

Cheers

Leffen

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Installing ruby on BeagleBoard XM

Posted on 2011/10/30 by leffen

I have at least got hold of a few BeagleBoard XM. My plan is to use them as a application hub using Ruby as the main development language. Today have been the big first time installation, and most of it vent quite well. And here is my initial recipe for getting Ruby 1.9.2 to work on it.

Recommended prerequisite: usb mouse, usb keyboard and a monitor with HDMI

Before boot

On a linux box do the following steps
Find latest image at http://rcn-ee.net/deb/rootfs/
For me that where http://rcn-ee.net/deb/rootfs/oneiric/ubuntu-11.10-r0-minimal-armel.tar.xz
Validate image usíng md5sum: md5sum ubuntu-11.10-r0-minimal-armel.tar.xz
Untar: tar xJf ubuntu-11.04-r3-minimal-armel.tar.xz
Enter directory : cd ubuntu-11.04-r3-minimal-armel
Insert a MicroSD card into a card reader
execute : sudo ./setup_sdcard.sh –mmc /dev/sdd –uboot beagle (Change device to your config)
Connect a monitor with HDMI to the beagleboard.
Connect a power supply to the beagle board. I have found that using USB and the iPod USB power works ok. http://store.apple.com/no/product/MB707ZM/B
Boot the BeagleBoar, sometimes i requires several attemts before booting

After boot

All as root or sudo

ifconfig -a
dhclient eth0
apt-get update
apt-get upgrade
apt-get install xfce4 gdm xubuntu-gdm-theme xubuntu-artwork xserver-xorg-video-omap3 network-manager
apt-get install build-essential
apt-get install cmake cmake-gui
shutdown -r now
Login using user: ubuntu pass: temppwd
Start a terminal window and change password using passwd

And now for the simple stuff :

Ruby

In a terminal window do :
bash < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer )
or visit http://beginrescueend.com/rvm/install/

Basis for installation :
http://www.ecse.monash.edu.au/twiki/bin/view/WSRNLab/BeagleBoardConfigurationForKinect and http://www.timzaman.nl/?p=1114&lang=en

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