Ubuntu

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Upstart to launch/respawn installation

• create this in /etc/init/facegraft.conf

# face graft - face graft job file description “face grafting installation” author “Robert Twomey <mail@roberttwomey.com” # Stanzas # # Stanzas control when and how a process is started and stopped # See a list of stanzas here: http://upstart.ubuntu.com/wiki/Stanzas#respawn # When to start the service start on runlevel [2345] # When to stop the service stop on runlevel [016] # Automatically restart process if crashed respawn # Essentially lets upstart know the process will detach itself to the background expect fork # Run before process pre-start script [ -d /var/run/facegraft ] || mkdir -p /var/run/facegraft echo "Put bash code here" end script # Start the process exec /home/rtwomey/launch_grafter.sh

UVC / webcam control in ubuntu

v4l2-ctl

Installing

• sudo apt-get install v4l-utils

Using

• set max zoom with c920:
  • v4l2-ctl -c zoom_absolute=200
• set max tele with c920:
  • v4l2-ctl -c zoom_absolute=100
• list all controllable settings:
  • v4l2-ctl --list-ctrls<code>

guvcview

• comes installed.
• launch it:
  • <code>guvcview
• should give you full access to your camera controls.

Make a Portable UBUNTU installation

1. make a live ubuntu usb disk in os x. directions
2. IN OSX: attach your new portable drive, partition it as an OSX Extended Journaled drive.
3. IN UBUNTU: start install. select "something else", create three partitions (boot, root, and swap), leaving existing partition from OSX.
4. Install Refind to first partition.

Install rEFInd to partition of external drive

• download refind flashdrive http://sourceforge.net/projects/refind/files/0.7.4/refind-flashdrive-0.7.4.zip/download
• use diskutil to find number for partition on your external:
  • diskutil list
  • my EFI partition on external drive is /dev/disk2
• unmount:
  • diskutil unmountDisk disk2
• use dd to copy flash image to external partition:
  • sudo dd if=refind-flashdrive-0.7.4.img of=/dev/disk2s1 bs=1m

Using H2 with Ubuntu

Recording from H2

• arecord -D "hw:2,0" -f S16_LE -c 2 -r 44100 test2.wav