Category Archives: Computer

Computer

Terminals and SSH

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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

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

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

Computer, Movies

Jumanji Screen

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Vincent showed me a very beautiful “pruts” he made.
It was the Boardgame from Jumanji.
He asked someone from work to write software for the center display.

I really liked the idea, so i made my own version.

Vincents Jumanji Board, there is a Laptop behind the little glass circle

I’ve cleaned-up the code and my version is here.
https://media.henriaanstoot.nl/websites/jumanji/index.html

The second page should play a mp3 sound sample, but there is a autoplay issue with some browsers. (I have fixed this on other projects, i will fix this later.

Computer, Music

Portable Squeeze Server

Update : https://www.henriaanstoot.nl/2022/05/26/portable-logitech-media-server-again/


Below is a picture of my mobile LMS server i used in my car.
I only had radio and a CD player, i’m not a radio man .. folk, pipes and audiobooks


At the time i was working for Dutch Railways, imagine me walking with this blinky leds thingy, though the railway station …

It consisted of a dual port usb charger, a usb hub to power the drive, the rpi wasn’t strong enough. Thumbdrives where small in capacity, so i had to use a spinning disk harddrive.
It was only a raspberry 1, in a case i had designed and lasercutted at Fablab Utrecht.

Now you can get rid of the Usb hub and harddrive using a small but with large capacity sdcards.

I could charge the thing in my car, and when i got home, it would connect to my home wifi network, sync-ed my MP3’s and turn off.

Computer, IOT / Domoticz

My first raspberry Pi

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Today i got my first Raspberry Pi!

Many followed

The first-generation Raspberry Pi Model B was released in February 2012, followed by the simpler and cheaper Model A.

Later i bought the Pi2, Pi3, Pi4 and the Zero’s

I like the little buggers! I’ve used them for many projects.

Aloha gave me a banana pi to try, and i’ve tried the orange pi.

Aparantly i already registered at the raspberry store 2012-02-14.
28 of May i got a “activation code” to order

Now (2023 .. all shops out of stock )

Computer, Photography

Web controller for Acdsee

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UPDATE: 2023 It’s still working

I made a webcontroller for viewing images on a big TV.

Using a Acdsee instance with MCE Controller installed and a webserver.

https://tig.github.io/mcec/example_commands.html

Rate the picture 1-5, clear rating, slideshow start, escape, open/close image, zoom-in out and zoom-reset. Previous and next image fullscreen and delete/yes

Some used defined keys (see php file)

 if ($cmd=="I"){ $put="chars:+"; };
 if ($cmd=="O"){ $put="chars:-"; };
 if ($cmd=="R"){ $put="chars:*"; };
 if ($cmd=="Y"){ $put="chars:y"; };
 if ($cmd=="F"){ $put="chars:f"; };
 if ($cmd=="D"){ $put="delete"; };
 if ($cmd=="N"){ $put="right"; };
 if ($cmd=="P"){ $put="left"; };
 if ($cmd=="ENTER"){ $put="enter"; };
 if ($cmd=="ESC"){ $put="escape"; };

PHP Script for the buttons and creating the TCP packets for MCE.

<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.css" />
<script src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
<script src="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.js"></script>
<?php
  $ip           = "remoteserver";
  $port         = "5150";

if (empty($put)) $put = "";
if (empty($line)) $line = "";
$cmd=$_POST['cmd'];
 if ($cmd=="I"){ $put="chars:+"; };
 if ($cmd=="O"){ $put="chars:-"; };
 if ($cmd=="R"){ $put="chars:*"; };
 if ($cmd=="Y"){ $put="chars:y"; };
 if ($cmd=="F"){ $put="chars:f"; };
 if ($cmd=="D"){ $put="delete"; };
 if ($cmd=="N"){ $put="right"; };
 if ($cmd=="P"){ $put="left"; };
 if ($cmd=="ENTER"){ $put="enter"; };
 if ($cmd=="ESC"){ $put="escape"; };
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
    $task = send_cmd("$put", $fp);

 if ($cmd=="1" || $cmd=="2" || $cmd=="3" || $cmd=="4" || $cmd=="5" || $cmd=="0"){
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("shiftdown:ctrl", $fp);
  fclose($fp);
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("$cmd", $fp);
  fclose($fp);
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("shiftup:ctrl", $fp);
  fclose($fp);
        };
if ($cmd=="S") {
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("shiftdown:alt", $fp);
  fclose($fp);
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("$cmd", $fp);
  fclose($fp);
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("shiftup:alt", $fp);
  fclose($fp);
        };

 if ($cmd=="fnietF"){
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("shiftdown:shift", $fp);
  fclose($fp);
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("shiftdown:ctrl", $fp);
  fclose($fp);
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("$cmd", $fp);
  fclose($fp);
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("shiftup:ctrl", $fp);
  fclose($fp);
  $fp = stream_socket_client("tcp://".$ip.":".$port, $errno, $errstr, 30);
        send_cmd("shiftup:shift", $fp);
  fclose($fp);
        };



//}
  echo "<html><head><title></title></head>";
  echo "<body><center><H1>";
$callself=$_SERVER['PHP_SELF'];
echo "<div data-role=\"controlgroup\" data-type=\"horizontal\">";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"1\"><input type=\"submit\" value=\"1\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"2\"><input type=\"submit\" value=\"2\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"3\"><input type=\"submit\" value=\"3\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"4\"><input type=\"submit\" value=\"4\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"5\"><input type=\"submit\" value=\"5\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"0\"><input type=\"submit\" value=\"Rate Clear\" /></form>\n";
echo "</div>";

echo "<div data-role=\"controlgroup\" data-type=\"horizontal\">";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"S\"><input type=\"submit\" value=\"SLIDESHOW\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"ESC\"><input type=\"submit\" value=\"ESC\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"ENTER\"><input type=\"submit\" value=\"OPEN/CLOSE\" /></form>\n";
  fclose($fp);
echo "</div>";

echo "<div data-role=\"controlgroup\" data-type=\"horizontal\">";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"I\"><input type=\"submit\" value=\"ZOOMIN\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"R\"><input type=\"submit\" value=\"ZOOMRESET\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"O\"><input type=\"submit\" value=\"ZOOMOUT\" /></form>\n";
echo "</div>";

echo "<div data-role=\"controlgroup\" data-type=\"horizontal\">";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"P\"><input type=\"submit\" value=\"PREV\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"D\"><input type=\"submit\" value=\"DEL\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"Y\"><input type=\"submit\" value=\"Y\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"F\"><input type=\"submit\" value=\"FULL\" /></form>\n";
    echo "<form data-transition=\"none\" style=\"display:inline;\" name=\"input\" action=\"$callself\" method=\"post\"><input type=\"hidden\" name=\"cmd\" value=\"N\"><input type=\"submit\" value=\"NEXT\" /></form>\n";
echo "</div>";
  echo "</body></html>";
  function send_cmd($cmd, $fp){
    fwrite($fp, $cmd);
    fwrite($fp, "\n");
        return;
  }
?>
Art, Computer

New shirts for our group “Prutsers”

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Design made with Inkscape

Joke about this: Someone’s granny said: “Indeed prutsers .. 3 is far to hot for those shirts”

Prutser .. as used many times on this site.

Definitions of botcher. someone who makes mistakes because of incompetence. synonyms: blunderer, bumbler, bungler, butcher, fumbler, sad sack, stumbler. type of: incompetent, incompetent person.

Used in our context: Not serious about the things we create, fast fun and easy .. then we take it apart and make something else.