No width parameter for SPAN tags, so limit width with javascript

$('span').each(function(index, value) {
  var limit = 30;
  var myID = $(this).attr('id');
  if(myID=='decoderip') {
   limit=60;
  }
  var mytext = $(this).text();
  if (mytext.length > limit) {
   // console.log('span text: '+mytext);
   $(this).text(mytext.slice(0, limit) + '...');
  }
 });

Time seconds increment on class of elements

function updateAge() {
 $('.age').each(function(){
  var age=$(this).text();
  age++;
  $(this).text(age);
 })
}

$(document).ready(function(){
  console.log('document ready'); 
  setInterval(updateAge, 1000); 
})

Debian Package Creator and Installer

I made this for a particular "product", change the directory variables and final archived .deb filename per your needs.

debian.build.install.sh
#!/usr/bin/env bash
# this.is.lance.miller@gmail.com
clear;
basedir='/home/';
microdir=$basedir"micro/";
chmod 0775 $microdir'DEBIAN/postinst';
myfile=$microdir'DEBIAN/control';
echo $myfile;
myversion=`cat $myfile | grep Version | cut -d' ' -f2`;
echo $myfile' declares version '$myversion;
dpkg-deb --build $microdir;
ls -l $basedir*.deb;
sleep 5;
dpkg -i $basedir'micro.deb';
ls -l $basedir*.deb;
newfile='our_product_name_'$myversion'_all.deb';
echo 'creating this versioned deb archive: '$newfile;
mv $basedir'micro.deb' $basedir$newfile;
ls -l $basedir*.deb;

Kill process

target='Encoder'
kill `ps -x | grep $target | cut -d" " -f2`

CPU Analysis PHP

<?php 
header("Content-Type:text/plain") ;

$free = shell_exec('free');
$free = (string)trim($free);
$free_arr = explode("\n", $free);
$mem = explode(" ", $free_arr[1]);
$mem = array_filter($mem);
$mem = array_merge($mem);
$memory_usage = $mem[2]/$mem[1]*100;


print "Report for host: ".gethostname()." ".$_SERVER['SERVER_ADDR']."   timestamp: ".date("Y:m:d:h:i:s a")." year/month/date/hour/minute/seconds ".PHP_EOL.PHP_EOL;
$loadArray = sys_getloadavg();
$cpu = $loadArray[2];
$memoryMsg = "Memory ".$memory_usage." percent in use.".PHP_EOL;
print PHP_EOL."++++++++++++ operating system profile +++++++++++++++++++++++++++++++++++++++++++++++++++".PHP_EOL;
print         "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++".PHP_EOL;
 echo 'Operating System: '.php_uname('s').PHP_EOL;
 echo 'Release Name: '.php_uname('r').PHP_EOL;
 echo 'Version: '.php_uname('v').PHP_EOL;
 echo 'Machine Type: '.php_uname('m').PHP_EOL;
print         "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++".PHP_EOL;


if(file_exists('/proc/cpuinfo')) {
 $retval=file_get_contents('/proc/cpuinfo');
 $mycount=explode(PHP_EOL, $retval);
 $cores = round( (count($mycount)/26), 0, PHP_ROUND_HALF_DOWN);
 $load = $cpu/$cores;
 $load = $load*100;


 print PHP_EOL."++++++++++++ hardware profile +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++".PHP_EOL;
 print         "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++".PHP_EOL;
 print "CPU has ".$cores." cores".PHP_EOL;
 print PHP_EOL.'Memory:'.PHP_EOL.$free.PHP_EOL;
 print PHP_EOL."+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++".PHP_EOL.PHP_EOL;

 print "CPU load ".$load." percent averaged over last 15 minutes. [ sys_getloadavg() is ".$loadArray[0]." ".$loadArray[1]." ".$loadArray[2]." ]".PHP_EOL;
 print $memoryMsg;
 print PHP_EOL."Detailed CPU Information ( /proc/cpuinfo ) below.".PHP_EOL;
 print $retval.PHP_EOL;
} else {
 print "CPU load ".$cpu.PHP_EOL;
 print $memoryMsg;
}

print PHP_EOL."Uptime information  below.".PHP_EOL;
exec('uptime', $retval); 
foreach($retval as $ret) {
 print $ret.PHP_EOL;
}  


?>

Unix/Linux how to run a command in background

nohup myFooCommand > /dev/null 2>&1 &

Perform post install scripting for Debian packages. Especially useful for setting file permissions

There are plenty of thorough references for creating Debian .deb packages, but not enough short examples that present the bare essentials. This is a minimal example with post install scripting -especially useful for setting file permissions- which is done specifically with the DEBIAN/postinst file.



The files that configure and command the Debian packaging and subsequent installation all reside in a directory named DEBIAN. Here are all the files I include in my DEBIAN directory:

1. DEBIAN/conffiles
2. DEBIAN/control
3. DEBIAN/postinst
4. DEBIAN/rules

Below are the contents of the files (contents changed to protect the proprietary)

1. DEBIAN/conffiles
   

   ...blank...
   

2. DEBIAN/control
   

   Package: foo-for-bar
   Version: 1.0.40
   Section: Network
   Priority: optional
   Architecture: all
   Depends:
   Maintainer: Jane Doe jane.doe@example.com
   Description: Acme FooBar WWW UI
    User interface for Acme FooBar.
   

3. DEBIAN/postinst
   

   #!/usr/bin/env bash
   cat $0
   chmod 777 /var/lib/foobar/conf/www/*
   chmod 777 /var/lib/foobar/*
   chmod 777 /var/lib/foobar/foobaringdaemon.py
   chmod 777 /etc/local.d/80_figlets_with_foobar.sh
   echo "hello there from postinst file"
   

4. DEBIAN/rules
   

   ...blank...
   

General File Structure

Let's say I want a .deb package to install files that will reside in the /var/www and /etc/local.d directories. In my case I'll create everything in the /home/ directory. Here is the root and first layer of directories.

• /home/FOOBAR/DEBIAN
• /home/FOOBAR/etc
• /home/FOOBAR/var

With all the above as environment to operate on, here is a .deb creation command:

cd /home/
dpkg-deb --build FOOBAR

The above dpkg-deb would create a file named FOOBAR.deb
To install the FOOBAR.deb package on a machine, you would run:

dpkg -i FOOBAR.deb

A parting note. I would rename my FOOBAR.deb to FOOBAR.1.0.40.deb to make evident the version number of the package.

jQuery Dialog zIndex

$( ".selector" ).dialog();

$( ".selector" ).css("background-color", "red");

console.log( 'z-index ' + $( ".selector" ).zIndex()     );

Make Sure Element is Visible and Displayed : Javascript

function makeVisible(id) {
 if($('#'+id).css('display') == 'none') {
 $('#'+id).css('display','block');
 }
 if($('#'+id).css('visibility') == 'hidden') {
 $('#'+id).css('visibility','visible');
 }
 console.log('makeVisible visibility '+$('#'+id).css('visibility'));
 console.log('makeVisible display  '+$('#'+id).css('display'));
}

function testPreviewImage() {
 makeVisible('Preview_Div');
 makeVisible('Preview_Image');
 $('#Preview_Div').zIndex(16777261);
 $('#Preview_Image').zIndex(16777271);
}