Category Archives: Computer

Fun with Xrandr

2018-03-02 fash Leave a comment

xrandr is an official configuration utility to the RandR (Resize and Rotate) X Window System extension. It can be used to set the size, orientation or reflection of the outputs for a screen.

Someone broke my screen at a hackers event. The terminal was really hard to read with the black parts, so i tilted the screen

Quiet friday at work, playing with my little trusty 2530p.
I’m using xmonad, so i don’t need any fancy work laptop.

Another quiet friday at work, working from home, i turned all monitoring displays upside-down, sideways, or rotated them every so much seconds.

While this is a lot of fun to use, i used this to get my monitorsetups exactly the way i wanted, at home or at work.
Different screen sizes, height differences .. no problem.

A fun tool to use is:
https://github.com/qurn/xrandr-keystone-helper

Some scripts:

# VGA off
xrandr --output VGA1 --off

# examples
xrandr --output LVDS1 --mode 1280x800 --output VGA1 --mode 1280x1024 --pos 0x1280 --left-of LVDS1
xrandr --output LVDS-1 --mode 1280x800 --output SVIDEO-1 --mode 1920x1080 --pos 0x0 --left-of SVIDEO-1
xrandr --output LVDS-1 --mode 1280x800 --pos 0x1920 --output VGA-1 --mode 1920x1080 --pos 0x2200 --right-of LVDS-1 --output DVI-I-1-1 --mode 1920x1080 --pos 0x0 --left-of LVDS-1

# zoomthingy
xrandr --output VGA1 --mode 1920x1080 --panning 1920x1080
xrandr --output VGA1 --mode 640x480 --panning 1920x1080+2910+0 --scale 1x1

# fix detection
xrandr --setprovideroutputsource 1 0

# add mode
xrandr --addmode DP-1 1440x720

# transform (see also terminal picture above)
xrandr --output LVDS --mode 1366x768 --panning 1166x768 --transform 1,0,-200,0,1,0,0,0,1

# Funky stuff
for f in `seq 1 9` ;do echo xrandr --output LVDS1 --transform 0.5403,-0.8$(echo -n $f)41,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do echo xrandr --output LVDS1 --transform 0.5403,-0.8$f41,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.1$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.841,0.5403,0,0,0,1.5 ; sleep 2; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.4$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.5$(echo -n $f)841,0.5403,0,0,0,1.5 ; sleep 1; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.4$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.5$(echo -n $f)841,0.5$(echo -n $f)403,0,0,0,1.5 ; sleep 1; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.4$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.$(echo -n $f)841,0.5403,0,0,0,1.5 ; sleep 2; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5403,-0.8$(echo -n $f)41,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5403,-0.8$f41,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5$(echo -n $f)403,-0.8$(echo -n $f)41,0,0.8$(echo -n $f)41,0.5$(echo -n $f)403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5$f403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5$f403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1; done
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.841,0.5403,0,0,0,1.5 ; sleep 2; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.$f403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.1,0.1,0,0.1,1,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform -0.11038,0.993888,0,-0.99388,-0.11038,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform -0.11,0.99,0,-0.99,-0.11,0,0,0,1
xrandr --output LVDS1 --transform 0.15425,0.988,0,-0.988,0.15425,0,0,0,1
xrandr --output LVDS1 --transform 0.2,-0.2,0,0.2,0.2,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5,-0.5,0,0.5,0.5,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5,0.5,0,0.5,1,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.54030,-0.841,0.841,0.54030,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.54030,-0.841,0.841,0.5403,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,0.1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,1.1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0.1,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform -0.5403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,-0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,-0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,1 --scale 2x2; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,2 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0.1,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0.1,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0.1,0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0.1,0.841,0.5403,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0.841,0.5403,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.1,30,0.1,0.9,-80,0,0,0.8 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,0,0.9,0.9,0,0,0,1 --scale 1.1x1.1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,0,0.9,0.9,0,0,0,1 --scale 1.5x1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,0,0.9,0.9,0,0,0,1 --scale 2x2 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,0,0.9,0.9,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,-0.1,30,0.1,0.9,-80,0,0,0.8 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 1.1,1.1,0,1.1,1,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 2.1,2.1,0,2.1,1,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1

Computer

Old computer : Comx-35

2018-02-09 fash

Trying to fix a computer from my computer collection.

RCA 1802 CPU @ 2.8 Mhz
32K Memory

Apparenty something wrong with the graphics chip.

The COMX uses the RCA CDP1869 and CDP1870 Video Interface System (VIS), consisting of the CDP1869 address and sound generator and the CDP1870 colour video generator.

Maybe next to try : checking signals using a Logic Analyzer

Art, Computer

Password fun and tips

2017-06-14 fash

See my other bofh page

Never ask me to reset your password, i you are to stupid to remember or not using a passwordsafe … I WILL give you a new password, and you WILL remember not having to ask me again. 🙂
On this day i drew some example pictures for colleages.

Okay .. now some tips to create uniq passwords for every site in you head.

NOTES! .. CNN example uses google as secret key ..
Want to type faster and not using mouse? .. Press home!

Type website
dirkjan (press home)
(press right) s
(press right) e
(press right) c
(press right) r
(press right) e
(press right) t
dsierckrjeatn <- your password

Computer

Need a bigger screenshot of a map

2017-05-31 fash

Some websites use ajax and dynamic viewing of larger images.
For a colleage i grabbed a screenshot using below to get him a full sized campsite map.

Firefox example: Open the page, google maps for example.
Press CTRL+SHIFT+M or Responsive Design View from the Developers Tools.

Change the size you want your virtual browser ( and doing so, your screenshot size here 2800 ) And click on the ‘take screenshot from viewport’ icon on the right.

Computer, IOT / Domoticz

HS 500 APC Ups to domoticz

2017-04-18 fash Leave a comment

A friend of mine wanted to monitor his UPS using domoticz.
This UPS only had a simple web interface with information.

So we needed to scrape this information and push this into domoticz.

First create a dummy device in domoticz and note its IDX.

Then we can scrape needed information using below script.

#!/bin/bash
#set -x
# Domoticz server
SERVER="127.0.0.1:8080"

# APC Back-UPS HS 500 status URL
UPS="http://IP-OF-UPS/status.cgi"

# The number of the IDX in the list of peripherals
IDX="362"

# Path for temporary file (RAM drive)
TMPFILE="/tmp/apc-hs500-status.txt"

# Get APC Back-UPS HS 500 status and write to temporary file
wget $UPS -O $TMPFILE 2>/dev/null
if [ $? = 0 ]
then
PWR=$(cat $TMPFILE| tr -dc '[[:print:]]' |awk -F"Watts" '{print $1}' |rev |cut -f1 -d\> |rev |cut -f1 -d\&)
fi

if [ $PWR ]
then
echo "Load on Battery in Watts: $PWR"
# Send data to Domoticz
curl -s -i -H "Accept: application/json" "http://$SERVER/json.htm?type=command&param=udevice&idx=$IDX&nvalue=0&svalue=$PWR"
PWR=""
fi
rm $TMPFILE

Computer, Hobby

Laptop chalkboard

2016-10-11 fash

I got bored and attacked my work laptop with a belt sander!

After getting rid of the embedded logo, i took a can of black chalkpaint.

Computer, Photography

Nikon Lenses

2016-07-28 fash

Created a graph for my Nikon lenses. It shows me what lens i can use at what Aperture / Range.

( https://media.henriaanstoot.nl/websites/lenses/ )

It uses canvas to draw lines and text, but thats only interesting for static stuff. ( https://www.w3schools.com/graphics/canvas_drawing.asp )
My example uses a php script to load information from a csv file. And loops though those entries and draw lens info.

Piece of canvas script to draw 17-70mm lens info.

ctx.fillStyle = 'rgba(0, 200, 100, 0.9)';
ctx.lineWidth=2;
ctx.beginPath();
ctx.moveTo(189.98560128675,163.25813588993);
ctx.lineTo(359.81942904592,202.49237972319);
ctx.lineTo(359.81942904592,250);
ctx.lineTo(189.98560128675,250);
ctx.strokeStyle="rgba(0,0,0,0.9)";
ctx.closePath();
ctx.fill();
ctx.stroke();
ctx.fillStyle = 'rgba(0,0,0,0.9';
ctx.save();
ctx.translate( 189.98560128675,153.25813588993);
ctx.rotate(-Math.PI / 4);
ctx.fillText("17-70mm", 0,0);
ctx.restore();

CSV lenses info

80;200;2.8;2.8;FX;80-200mm f/2.8
10;24;3.5;4.5;DX;10-24mm wide
28;100;3.5;5.6;;28-100mm leen
17;70;2.8;4;DX;17-70mm
35;35;1.8;1.8;DX;35mm f/1.8
60;60;2.8;2.8;FX;60mm f/2.8
28;300;3.5;5.6;FX;28-300mm

PHP Code to generate


<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>Lens</title>
  <style type='text/css'>
    body{ background-color: ivory; }
#canvas{border:1px solid white;}

  </style>
<script type='text/javascript'>//<![CDATA[
window.onload=function(){
var canvas=document.getElementById("canvas");
var ctx=canvas.getContext("2d");
<?PHP
$log=yes;

print "ctx.strokeStyle = 'rgba(200, 0, 0, 0.1)';";
print "ctx.fillStyle = 'rgba(0, 0, 0, 0.9)';";
$apes=array(1.4,2,2.8,4,5.6);
$count=0;
foreach ($apes as &$value) {
$height=log($value)*110;
$count=$count+1;
$height=$height+50;
print "ctx.font = '20px Arial';";
print "ctx.fillText(\"$value\", 20, $height);";
print "ctx.lineWidth=2;";
print "ctx.moveTo(50, $height);";
print "ctx.lineTo(900, $height);";
}
print "ctx.stroke();";
$count=0;
$apes=array(8,16,32,64,128);
foreach ($apes as &$value) {
$width=log($value)*120;
$count=$count+1;
$width=$width-150;
print "ctx.fillText(\"$value\", $width, 270);";
}
print "ctx.font = '15px Arial';";
?>
ctx.beginPath();
ctx.moveTo(50,250);
ctx.lineTo(900,250);
ctx.moveTo(50,50);
ctx.lineTo(50,250);
ctx.lineWidth=1;
ctx.strokeStyle="rgba(0, 0, 0, 0.9)";
ctx.stroke();
<?PHP

$configfile="lenses.csv";

$config=get2DArrayFromCsv($configfile,";");

        foreach ($config as $value) {
$fp1=$value[0];
$fp2=$value[1];
$ap1=$value[2];
$ap2=$value[3];
$x1=(log($fp1)*120)-150;
$x2=(log($fp2)*120)-150;
$y1=(log($ap1)*110)+50;
$y2=(log($ap2)*110)+50;
if ( $x1 == $x2 ) { $color="200,0,0"; } else { $color="0,0,0"; }
if ( $x1 == $x2 ) { $x2 = $x2 + 6; }
$green=200;
$xx1=(log($fp1*2)*120)-150;
$xxx1=(log($fp1*2)*120)-160;
$xx2=(log($fp2*2)*120)-150;
$yy1=$y1-10;
$yyy1=$y1+10;

if ( $xx1 == $xx2 ) { $xx2 = $xx2 + 6; }
if ( $value[4] == "FX" ) { $col="200"; $trans=0.2; } else { $col="0";$trans=0.9;  }
?>

ctx.fillStyle = 'rgba(<?PHP print $col; ?>, <?PHP print $green; ?>, 100, <?PHP print $trans; ?>)';
ctx.lineWidth=2;
ctx.beginPath();
ctx.moveTo(<?PHP print "$x1"; ?>,<?PHP print "$y1"; ?>);
ctx.lineTo(<?PHP print "$x2"; ?>,<?PHP print "$y2"; ?>);
ctx.lineTo(<?PHP print "$x2"; ?>,<?PHP print "250"; ?>);
ctx.lineTo(<?PHP print "$x1"; ?>,<?PHP print "250"; ?>);
ctx.strokeStyle="rgba(<?PHP print "$color"; ?>,<?PHP print $trans;  ?>)";
ctx.closePath();
ctx.fill();
ctx.stroke();
ctx.fillStyle = 'rgba(<?PHP print "$color"; ?>,<?PHP print $trans;  ?>';
ctx.save();
ctx.translate( <?PHP print "$x1"; ?>,<?PHP print "$yy1"; ?>);
ctx.rotate(-Math.PI / 4);
ctx.fillText("<?PHP print "$value[5]"; ?>", 0,0);
ctx.restore();
<?PHP

if ( $value[4] == "FX" ) {
?>
ctx.fillStyle = 'rgba(0, <?PHP print "200"; ?>, 0, 0.9)';
ctx.beginPath();
ctx.moveTo(<?PHP print "$xx1"; ?>,<?PHP print "$y1"; ?>);
ctx.lineTo(<?PHP print "$xx2"; ?>,<?PHP print "$y2"; ?>);
ctx.lineTo(<?PHP print "$xx2"; ?>,<?PHP print "250"; ?>);
ctx.lineTo(<?PHP print "$xx1"; ?>,<?PHP print "250"; ?>);
ctx.strokeStyle="rgba(<?PHP print "$color"; ?>,0.9";
ctx.closePath();
ctx.fill();
ctx.stroke();
ctx.fillStyle = 'rgba(0, 0, 0, 0.9)';
ctx.save();
ctx.translate( <?PHP print "$xx1"; ?>,<?PHP print "$yy1"; ?>);
ctx.rotate(-Math.PI / 4);
ctx.fillText("<?PHP print "$value[5]"; ?> crop", <?PHP print "0"; ?>, <?PHP print "0"; ?>);
ctx.restore();
<?PHP
}
}
?>

ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
ctx.font = 'bold 10pt Calibri';

}//]]>

</script>

</head>
<body><small>
  <canvas id="canvas" width=700 height=300></canvas>
<P>
<?PHP
$configfile="lenses.csv";

   function get2DArrayFromCsv($file,$delimiter) {
       if (($handle = fopen($file, "r")) !== FALSE) {
           $i = 0;
           while (($lineArray = fgetcsv($handle, 4000, $delimiter)) !== FALSE) {
               for ($j=0; $j<count($lineArray); $j++) {
                   $data2DArray[$i][$j] = $lineArray[$j];
               }
               $i++;
           }
           fclose($handle);
       }
       return $data2DArray;
   }

$config=get2DArrayFromCsv($configfile,";");

        foreach ($config as $value) {
            print "<B>Lens = $value[5] </B><BR>";
            print "Focal min = $value[0] <BR>";
            print "Focal max = $value[1] <BR>";
            print "Arp min = $value[2] <BR>";
            print "Arp max = $value[3] <BR>";
            print "Crop (FX/DX) = $value[4] <P>";
        }


?>

</body>

</html>

Computer

Terminals and SSH

2016-04-26 fash Leave a comment

I’m using a lot of terminals, spawning a new terminal and running ssh, without knowing if i still have a session running.

Lets see:

This was done using something like:

#!/bin/bash
count=$(ps -ef | grep xterm | grep -v grep | wc -l)
timestamp=$(date +%s)
echo "$timestamp,$count" >> /var/local/terminallog

Later i made a script to push this information in Grafana

Now for the SSH part.
I’m jumping from machine to machine using ssh, sometime i loop back to a server i was already connected to .. this helps me to keep track

in ssh_config add
SendEnv SSHTRAIL

in sshd_config add
AcceptEnv SSHTRAIL

in /etc/profile
export SSHTRAIL=$SSHTRAIL:$HOSTNAME

restart sshd
when you do this on all your machines you can get a trail of ssh using:
echo $SSHTRAIL
workstation:server1:server66:server1

I could change the prompt when a loop is detected
echo $SSHTRAIL | sed -e 's/:/\n/g' | sort | uniq -c | grep -v 1 | ... | echo "WARNING: loop in ssh"

Computer

Kanban effectiveness graph generator

2016-02-17 fash

While attending a Kanban workshop, i needed to keep myself awake.
I’d hardly slept that night.

So i wrote something useful using PHP JPgraph and Sqlite, while attending the workshop.
It shows the effectiveness of the team using kanban.

index.php

<html>
<head>
</head>
<body>
<?PHP
if ($_SERVER['REQUEST_METHOD'] == 'POST'){
include ("insert.php");
}
include ("getlast.php");
?>
<img src="graph.php"><P>
<form action="" method="POST">
Tickets from board: <input size="4" name="klaar" value="<?PHP print $klaar; ?>"/> <input type="checkbox" name="useklaar" value="useklaar" checked> Use fromboard <P>
    <table>
        <tr>
            <td>inlane:</td><td><input size="4" name="inlane" value="<?PHP print $inlanelast; ?>"/></td>
            <td>analyse:</td><td><input size="4" name="analyze" value="<?PHP print $analyzelast; ?>" /></td>
            <td>implement:</td><td><input size="4" name="implement" value="<?PHP print $implementlast; ?>" /></td>
            <td>documentation:</td><td><input size="4" name="documentation" value="<?PHP print $documentationlast; ?>"/></td>
            <td>peer:</td><td><input size="4" name="peer" value="<?PHP print $peerlast; ?>"/></td>
            <td>test:</td><td><input size="4" name="test" value="<?PHP print $testlast; ?>"/></td>
            <td>done:</td><td><input size="4"  name="done" value="<?PHP print $donelast; ?>"/></td>
        </tr>
    </table>
            <input type="submit" value="Submit"/>
</form>

</body>
</html>

graph.php

<?php
include ("jpgraph/jpgraph.php");
include ("jpgraph/jpgraph_line.php");
$db = new SQLite3('mysqlitedb.db');
$index=0;
$results = $db->query('SELECT inlane FROM ENTRIES');
while ($row = $results->fetchArray()) {
$inlane[$index] = $row[0];
     $index++;
}
$index=0;
$results = $db->query('SELECT analyze FROM ENTRIES');
while ($row = $results->fetchArray()) {
$analyze[$index] = $row[0];
     $index++;
}
$index=0;
$results = $db->query('SELECT implement FROM ENTRIES');
while ($row = $results->fetchArray()) {
$implement[$index] = $row[0];
     $index++;
}
$index=0;
$results = $db->query('SELECT documentation FROM ENTRIES');
while ($row = $results->fetchArray()) {
$documentation[$index] = $row[0];
     $index++;
}
$index=0;
$results = $db->query('SELECT peer FROM ENTRIES');
while ($row = $results->fetchArray()) {
$peer[$index] = $row[0];
     $index++;
}
$index=0;
$results = $db->query('SELECT test FROM ENTRIES');
while ($row = $results->fetchArray()) {
$test[$index] = $row[0];
     $index++;
}
$index=0;
$results = $db->query('SELECT done FROM ENTRIES');
while ($row = $results->fetchArray()) {
$done[$index] = $row[0];
     $index++;
}
//$datay = array(1,2,4);
$datay1 = array(2,4,4,6,7,4);
$datay2 = array(2,3,4);
$graph = new Graph(600,600,"auto");
$graph->img->SetMargin(40,40,40,40);	
$graph->img->SetAntiAliasing();
$graph->SetScale("textlin");
$graph->SetShadow();
$graph->title->Set("Kanban grapher - A pruts by FASH");
$graph->title->SetFont(FF_FONT1,FS_BOLD);

// Add 10% grace to top and bottom of plot
$graph->yscale->SetGrace(10,10);

//ID|inlane|implement|documentation|peer|test|done

$p1 = new LinePlot($inlane);
$p1->mark->SetType(MARK_FILLEDCIRCLE);
$p1->mark->SetFillColor("red");
$p1->mark->SetWidth(4);
$p1->SetColor("red");
$p1->SetCenter();
$graph->Add($p1);

$p2 = new LinePlot($analyze);
$p2->mark->SetType(MARK_FILLEDCIRCLE);
$p2->mark->SetFillColor("orange");
$p2->mark->SetWidth(4);
$p2->SetColor("orange");
$p2->SetCenter();
$graph->Add($p2);

$p3 = new LinePlot($implement);
$p3->mark->SetType(MARK_FILLEDCIRCLE);
$p3->mark->SetFillColor("yellow");
$p3->mark->SetWidth(4);
$p3->SetColor("yellow");
$p3->SetCenter();
$graph->Add($p3);

$p4 = new LinePlot($documentation);
$p4->mark->SetType(MARK_FILLEDCIRCLE);
$p4->mark->SetFillColor("green");
$p4->mark->SetWidth(4);
$p4->SetColor("green");
$p4->SetCenter();
$graph->Add($p4);

$p5 = new LinePlot($peer);
$p5->mark->SetType(MARK_FILLEDCIRCLE);
$p5->mark->SetFillColor("blue");
$p5->mark->SetWidth(4);
$p5->SetColor("blue");
$p5->SetCenter();
$graph->Add($p5);

$p6 = new LinePlot($test);
$p6->mark->SetType(MARK_FILLEDCIRCLE);
$p6->mark->SetFillColor("purple");
$p6->mark->SetWidth(4);
$p6->SetColor("purple");
$p6->SetCenter();
$graph->Add($p6);

$p7 = new LinePlot($done);
$p7->mark->SetType(MARK_FILLEDCIRCLE);
$p7->mark->SetFillColor("black");
$p7->mark->SetWidth(4);
$p7->SetColor("black");
$p7->SetCenter();
$graph->Add($p7);

$graph->legend->SetLineSpacing(5);

$p1->SetLegend ("inlane"); 
$p2->SetLegend ("analyse"); 
$p3->SetLegend ("implementation"); 
$p4->SetLegend ("documentation"); 
$p5->SetLegend ("peer"); 
$p6->SetLegend ("test"); 
$p7->SetLegend ("done"); 
$graph ->legend->Pos( 0.09,0.09,"left" ,"top");

$graph->Stroke();
?>

insert.php

<?php
$db = new SQLite3('mysqlitedb.db');
//ID|inlane|implement|documentation|peer|test|done
$klaar=$_POST["klaar"];
$inlane=$_POST["inlane"];
$analyze=$_POST["analyze"];
$implement=$_POST["implement"];
$documentation=$_POST["documentation"];
$peer=$_POST["peer"];
$test=$_POST["test"];
$done=$_POST["done"];

$db->exec("DELETE FROM BOARD");
$db->exec("INSERT INTO BOARD  VALUES ($klaar,$inlane,$analyze,$implement,$documentation,$peer,$test,$done)");

$done=$_POST["done"]+$klaar;
$test=$_POST["test"]+$done;
$peer=$_POST["peer"]+$test;
$documentation=$_POST["documentation"]+$peer;
$implement=$_POST["implement"]+$documentation;
$analyze=$_POST["analyze"]+$implement;
$inlane=$_POST["inlane"]+$analyze;

$db->exec("INSERT INTO ENTRIES  VALUES (NULL,$inlane,$analyze,$implement,$documentation,$peer,$test,$done)");
?>

getlast.php

<?php
$db = new SQLite3('mysqlitedb.db');

$results = $db->query('SELECT inlane FROM BOARD LIMIT 1;');
$row = $results->fetchArray();
$inlanelast = $row[0];

$results = $db->query('SELECT implement FROM BOARD LIMIT 1;');
$row = $results->fetchArray();
$implementlast = $row[0];

$results = $db->query('SELECT documentation FROM BOARD LIMIT 1;');
$row = $results->fetchArray();
$documentationlast = $row[0];

$results = $db->query('SELECT peer FROM BOARD LIMIT 1;');
$row = $results->fetchArray();
$peerlast = $row[0];

$results = $db->query('SELECT test FROM BOARD LIMIT 1;');
$row = $results->fetchArray();
$testlast = $row[0];

$results = $db->query('SELECT done FROM BOARD LIMIT 1;');
$row = $results->fetchArray();
$donelast = $row[0];

$results = $db->query('SELECT vanbord FROM BOARD LIMIT 1;');
$row = $results->fetchArray();
$klaar = $row[0];

$results = $db->query('SELECT analyze FROM BOARD LIMIT 1;');
$row = $results->fetchArray();
$analyzelast = $row[0];
?>

Computer

Brother printer hack’s

2015-04-25 fash

Cartridge not recognised?
Just replace chip! With a original one

UPDATE: Maybe there is a counter in there, had a cartridge which wouldn’t work anymore ?!?

Cartridge saying .. i’m empty, but still visible ink?

Just tape up above part!

Note: there are many solutions found on the web, like opening the lid and pressing two buttons to get into a reset menu. Or Cold start your printer without cartrides 5 times to reset stored ink levels.

These are only the things I found

Prutser ..

Category Archives: Computer

Fun with Xrandr

Old computer : Comx-35

Password fun and tips

Need a bigger screenshot of a map

HS 500 APC Ups to domoticz

Laptop chalkboard

Nikon Lenses

Terminals and SSH

Kanban effectiveness graph generator

Brother printer hack’s

"If something is worth doing, it's worth overdoing."