marc-hanheide

export ROS_HOSTNAME=`grep \`ifconfig | grep -A1 ppp | grep inet | cut -f2 -d:| cut -f1 -d" "\` /etc/hosts | tr -s " " | cut -f2 -d " "`
echo "ROS_HOSTNAME set to $ROS_HOSTNAME"

marc-hanheide

case $- in
*i*)    # interactive shell

	if [ -z "$TMUX" ]; then
		if [ "$SSH_CLIENT" ]; then
			TMUX_SESSION=`echo ${SSH_CLIENT} | cut -f1 -d" "`
			echo "checking for tmux session with ID $TMUX_SESSION"
			if tmux has-session -t "$TMUX_SESSION" > /dev/null; then
				exec tmux at -t "$TMUX_SESSION"
			else

marc-hanheide

# if the rosdistro has been reconfigured to use another version, 
# bloom needs to be told to use the official one with this env variable:

ROSDISTRO_INDEX_URL=https://raw.github.com/ros/rosdistro/master/index.yaml bloom-release -r indigo -t indigo mongodb_store

marc-hanheide

sudo sysctl -a | grep \\.rp_filter | cut -f1 -d" " | xargs -i{} -- sudo sysctl -w {}=0

marc-hanheide

# taken from https://github.com/jordansissel/fpm/wiki/ConvertingGems#convert-a-gem-and-all-of-its-dependencies

sudo apt-get install ruby1.9.3 rubygems
mkdir /tmp/gems
gem1.9.3 install --no-ri --no-rdoc --install-dir /tmp/gems jekyll
find /tmp/gems/cache -name '*.gem' | xargs -rn1 fpm -d ruby1.9.3 -d rubygems --gem-gem /usr/bin/gem1.9.3 -s gem -t deb

marc-hanheide

# enable reverse port forwarding in firewall settings:
#   8181: mjpegserver
#   9090: rosws
#   22222: reverse ssh
AUTOSSH_POLL=5 AUTOSSH_FIRST_POLL=5 autossh -M 6000 harek -R8181:localhost:8181 -R9090:localhost:9090 -R22222:localhost:22

# put this in your `.ssh/config`
Host harek
	TCPKeepAlive yes
	ServerAliveInterval 20

marc-hanheide

%%%%%%%%% 
% Generate some test data, here 4 points p with directions d

% the position of the offset of the lines
p=[0 0; 1 0; 0 1; 1 1]';

% the direction for the individual lines, not sure if this is the format that is needed or if you have the rotation matrix.
% If the latter then simply multiply take the first row of the rotation matrix as d_i
d=[1 1; -1 1; 1 -1; -1 -1]'; 

marc-hanheide

# every minute check if connection is still alive and try reconnecting if it's not

*/1 * * * * /usr/bin/nmcli c status id STRANDS-AAF > /dev/null || /usr/bin/nmcli c up id STRANDS-AAF

marc-hanheide

#!/bin/sh
df -H | grep -vE '^Filesystem|tmpfs|cdrom|none|udev' | awk '{ print $5 " " $1 }' | while read output;
do
  #echo $output
  usep=$(echo $output | awk '{ print $1}' | cut -d'%' -f1  )
  partition=$(echo $output | awk '{ print $2 }' )
  if [ $usep -ge 80 ]; then
    echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)" |
     mail -s "Alert: Almost out of disk space $usep%" root
  fi

marc-hanheide

Links

• http://askubuntu.com/questions/596386/visualizing-linux-gpt-partition-efi-from-windows-host
• http://lifehacker.com/how-to-dual-boot-and-virtualize-the-same-partition-on-y-493223329

Grub commands

set root=(hd0) 
set prefix=(hd0)/boot/grub 
insmod normal