frett27

__BEGIN__
*vimtips.txt*	For Vim version 7.3.  
------------------------------------------------------------------------------
" new items marked [N] , corrected items marked [C]
" *best-searching*
/joe/e                      : cursor set to End of match
3/joe/e+1                   : find 3rd joe cursor set to End of match plus 1 [C]
/joe/s-2                    : cursor set to Start of match minus 2
/joe/+3                     : find joe move cursor 3 lines down
/^joe.*fred.*bill/          : find joe AND fred AND Bill (Joe at start of line)

frett27

Soft reset of branch pointer

git reset --hard f414f31
git reset --soft HEAD@{1}
git commit -m "Reverting to the state of the project at f414f31"

frett27

creating a random matrix 

>>> np.random.rand(5,5)
array([[ 0.62571083,  0.65582837,  0.68177139,  0.01175444,  0.48659345],
       [ 0.21193695,  0.52344695,  0.19238696,  0.11999955,  0.26967286],
       [ 0.8413876 ,  0.32192564,  0.68335969,  0.60749775,  0.93875251],
       [ 0.38622055,  0.02982458,  0.84065832,  0.71816465,  0.34432988],
       [ 0.99334523,  0.84521018,  0.20164392,  0.92211239,  0.5730022 ]])

frett27

frett27

%angular


<link rel="stylesheet" href="https://js.arcgis.com/3.16/esri/css/esri.css" />
<div id="map" style="height: 800px; width: 100%"></div>

<script type="text/javascript">
var map;
function initMap() {
    

frett27

Step 1.  Install sysstat
sudo apt-get install sysstat

Step 2. Enable stat collection
sudo vi /etc/default/sysstat
change ENABLED=”false” to ENABLED=”true”
save the file

Step 3. Change the collection interval from every 10 minutes to every 2 minutes.
sudo vi /etc/cron.d/sysstat

frett27

configure the default.cgpr for avr : gprconfig -o default.cgpr --db . --target=avr

frett27

# ubuntu 16
sudo apt-get install -y software-properties-common
echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | debconf-set-selections &&   add-apt-repository -y ppa:webupd8team/java &&   apt-get update &&   apt-get install -y oracle-java8-installer &&   rm -rf /var/lib/apt/lists/* &&   rm -rf /var/cache/oracle-jdk8-installer


# ubuntu 14
sudo add-apt-repository ppa:webupd8team/java -y
sudo apt-get update
sudo apt-get install oracle-java8-installer

frett27

install armbian from website

install docker on the device

sudo curl -sSL get.docker.com | sh

-->for missing aufs support on default kernel, use overlay2

grant user for docker use

frett27

RP : aweek
stddev within 10 min

select stddev(value) from home.aweek.wifi where time > now() - 10m group by mac,time(1m) fill(none)

continuous query :

cq_temperature_avg_1d CREATE CONTINUOUS QUERY cq_temperature_avg_1d ON home BEGIN SELECT mean(value) INTO home.autogen.avg_temperature_avg_1d FROM home.autogen.temperature GROUP BY time(1d) END