Blog by Andreas Glaser » Computer

Ubuntu 10.10 to 11.04 Upgrade Issue

Andreas Glaser — Mon, 28 Feb 2011 22:33:45 +0000

Just came across a little issue as I tried to upgrade my Ubuntu 10.10 (maverick) to 11.04 Alpha 2 (Natty).
I followed the offical upgrade guide on ubuntu.com (http://www.ubuntu.com/testing/natty/alpha2) and ran into following error.

root@jazz:/home/andreas-glaser# update-manager -d
warning: could not initiate dbus
**
GLib-GIO:ERROR:/build/buildd/glib2.0-2.26.1/gio/gdbusconnection.c:2270:initable_init: assertion failed: (connection->initialization_error == NULL)
Aborted

Solution

Instead of “update-manager -d” simply use “dbus-launch update-manager -d”

Enjoy!

How to make Firefox look like Chome

Andreas Glaser — Tue, 18 Jan 2011 15:03:07 +0000

Granted, Googles Chrome looks a thousand times better than Firefoxes default theme.
Luckily we can with only three small addons make Firefox look and feel almost identical.

Required Addons

Chromifox Basic – Chrome theme for Firefox
Ominbar – Combines address and searchbar
Download Statusbar – Displays download statuses in the statusbar

Result

Enjoy!

Webservices – REST vs. Soap

Andreas Glaser — Mon, 29 Nov 2010 12:19:26 +0000

As I was browsing the web I came across this excellent article about REST and Soap written by Paul Prescod.

Roots of the REST/SOAP Debate

I hope you guys enjoy it as much as I did.

(Python) Mysqldump Backup 1.1

Andreas Glaser — Mon, 12 Apr 2010 08:00:02 +0000

Backups are crucial!
Since that is fact I wrote a little script in Python to easily backup mysql databases on a linux server.

Note: There is a file embedded within this post, please visit this post to download the file.

How do i configure it?
After you downloaded the script to your Linux server you will need a few Linux packages. Execute the following commands as root:

apt-get update
apt-get install python mysqldump bzip2

What does it do?
This script dumps a certain database (or all databases) into a single mysql file, which is zipped (bzip2) afterwards.

Now edit the script with your preferred editor.

vim mysqldump-backup.py

Customize the following lines:

# 2. Config
mysqlUser = “root”
mysqlPwd = “YOUR_PASSWORD”
mysqlDatabase = “–all-databases”
dumpDir = “/tmp/”
dumpFile = “mysqldump-” + strftime(“%Y-%m-%d-%H-%M-%S”, gmtime()) + “.sql”

The last step is to make the script executable:

chmod u +x mysqldump-backup-1.1.py

Thats it!

You can now run the script:

/path/to/the/script/mysqldump-backup-1.1.py

To run it daily (crontab):

crontab -e

Add at the bottom:

0 3 * * * /path/to/the/script/mysqldump-backup.py

Now your databases will be backupped daily at 03:00 am

Download

Note: There is a file embedded within this post, please visit this post to download the file.

Changelog
1.1

Removed trailing semicolons
Renamed variables

1.0

Initial release

Have fun!
Andreas Glaser aka JaZz

Apache2 – Perfect mod_expires configuration

Andreas Glaser — Mon, 14 Dec 2009 13:37:41 +0000

Well, “perfect” might be a little exaggerated although I consider this a good configuration at the moment.
You can put this globally into your httpd.conf or separately in every vhost configuration file you need it.

^?View Code BASH

 
        ExpiresActive On
        ExpiresByType text/css "access plus 1 month"
        ExpiresByType text/javascript "access plus 1 month"
        ExpiresByType application/x-javascript "access plus 1 month"
        ExpiresByType application/javascript "access plus 1 month"
        ExpiresByType image/png "access plus 1 year"
        ExpiresByType image/jpeg "access plus 1 year"
        ExpiresByType image/gif "access plus 1 year"
        ExpiresByType image/x-icon "access plus 1 month"

Make sure you versionize your JavaScript/CSS to be able to force an update, in case you change them.
Example:

^?View Code HTML

 
    My Example
 
Some Content

You should also give newly updated pictures new names!

Over and out,
JaZz

40 SPB Mobile Shell Wallpapers Vol. 2

Andreas Glaser — Sat, 12 Dec 2009 17:30:18 +0000

This is a collection of 40 awesome SPB Mobile Shell Wallpapers (Backgrounds).

Note: There is a file embedded within this post, please visit this post to download the file.

[Show as slideshow]

Note: There is a file embedded within this post, please visit this post to download the file.

All credit goes to the artists of the wallpapers!

Click here to get to Vol. 1

Enjoy,
JaZz

PHP – SRCDS/HTTP Synchronizer (Linux)

Andreas Glaser — Thu, 03 Dec 2009 17:03:04 +0000

I just came across a script I have totally forgotten about, which I wrote quite a while ago.
I haven’t managed to write a real documentation so far… anyway… feel free to try it.

All you need to do, is to install php in case you haven’t done it already!

Note: There is a file embedded within this post, please visit this post to download the file.

^?View Code PHP

#! /bin/php


/*
SRCDS FastDownload Syncronizer 
Version: 1.0
 
Author:
Andreas Glaser (JaZz)
www.andreas-glaser.com
 
*/
############################*
# Variables (DO NOT TOUCH):
#
$Config = array();
$Files = array();
 
############################*
# Configuration (Required):
#
// :: CONFIG
// :: CONFIG ~ BZIP2
$Config['Bzip2']['Enabled'] = true;
 
// Enable or diable bzip2 compression
$Config['Bzip2']['Path'] = '/bin/bzip2';
 
// Path to Bzip2 (default: /bin/bzip2)
$Config['Htdocs']['Delete'] = false;
 
// Determines whether obsolete files in the webdirectory beeing deleted
$Config['Htdocs']['Override'] = false;
 
// Determines if every time you synchonize your directories the file gonna be overriden
$Config['Chmod']['Enabled'] = true;
 
// Enable or disable to set new RWX rights
$Config['Chmod']['Access'] = '755';
 
// Sets the new
$Config['Chmod']['Path'] = '/bin/chmod';
 
// Path of Chmod
$Config['Chown']['Enabled'] = true;
 
// Determines if you like to set a new user for the synchonizes web files
$Config['Chown']['User'] = 'web001';
 
// Owner of the synchronized files
$Config['Chown']['Group'] = 'web';
 
// Group of the synchronized files
$Config['Chown']['Path'] = '/bin/chown';
 
// Path to Chown
// :: CONFIG ~ PATHS
$Config['Paths']['cstrike'] = '/path/to/your/srcds/';
 
// Path to your CounterStrike Server
$Config['Paths']['htdocs'] = '/path/to/your/htcods/fastdl/';
 
// Path to your web directory
$Config['Paths']['syn_dirs'][] = 'maps';
 
// Directoriyto synchronize
$Config['Paths']['syn_dirs'][] = 'materials';
 
// Directory to synchronize
$Config['Paths']['syn_dirs'][] = 'models';
 
// Directory to synchronize
$Config['Paths']['syn_dirs'][] = 'resource';
 
// Directory to synchronize
$Config['Paths']['syn_dirs'][] = 'sound';
 
// Directory to synchronize
// :: Config Check (DO NOT TOUCH)
@exec('whoami', $Output);
if ($Output[0] !== 'root') {
  exit('Error: You must be logged in as root'."\n");
}
file_exists($Config['Paths']['cstrike']) && is_dir($Config['Paths']['cstrike']) or exit('Error: The selected cstrike directory does not exist'."\n");
file_exists($Config['Paths']['htdocs']) && is_dir($Config['Paths']['htdocs']) or exit('Error: The selected htdocs directory does not exist'."\n");
if ($Config['Bzip2']['Enabled'] === true) {
  file_exists($Config['Bzip2']['Path']) or exit('Error: Bzip2 was not found on your system'."\n");
}
if ($Config['Chmod']['Enabled'] === true) {
  file_exists($Config['Chmod']['Path']) or exit('Error: Chmod was not found on your system'."\n");
}
if ($Config['Chown']['Enabled'] === true) {
  file_exists($Config['Chown']['Path']) or exit('Error: Chown was not found on your system'."\n");
}
foreach ($Config['Paths']['syn_dirs'] AS $Key => $Val) {
  file_exists($Config['Paths']['cstrike'].$Val.'/') or exit("\n".$Val.' does not exist'."\n");
}
foreach ($Config['Paths']['htdocs'] AS $Key => $Val) {
  file_exists($Config['Paths']['cstrike'].$Val.'/') or exit("\n".$Val.' does not exist'."\n");
}
 
// :: Do it (DO NOT TOUCH)
echo "\n".'<<< START SYNCHRONIZATION >>>'."\n";
foreach ($Config['Paths']['syn_dirs'] AS $Key => $Val) {
  indexCstrike($Config['Paths']['cstrike'], $Val);
}
if ($Config['Htdocs']['Delete'] === true) {
  indexHtdocs($Config['Paths']['htdocs']);
 
  // :: Delete needless files in htdocs
  foreach ($Files['HTDOCS']['FILES'] AS $Key => $Val) {
    $SubDir = substr($Key, strlen($Config['Paths']['htdocs']));
    if ($Config['Bzip2']['Enabled'] === true) {
      if (substr($SubDir, - 4) == '.bz2') {
        $SubDir = substr($SubDir, 0, - 4);
      }
    }
    if (!isset($Files['CSTRIKE']['FILES'][$Config['Paths']['cstrike'].$SubDir])) {
      unlink($Config['Paths']['htdocs'].$SubDir);
    }
  }
 
  // :: Delete needless directories in htdocs
  foreach ($Files['HTDOCS']['DIRS'] AS $Key => $Val) {
    $SubDir = substr($Key, strlen($Config['Paths']['htdocs']));
    if ($Config['Paths']['htdocs'].$SubDir !== $Config['Paths']['htdocs']) {
      if (!isset($Files['CSTRIKE']['DIRS'][$Config['Paths']['cstrike'].$SubDir])) {
        rmdir($Config['Paths']['htdocs'].$SubDir);
      }
    }
  }
}
 
// :: Sync Directories
foreach ($Files['CSTRIKE']['DIRS'] AS $Key => $Val) {
  $SubDir = substr($Val, strlen($Config['Paths']['cstrike']), - 1);
  if (!file_exists($Config['Paths']['htdocs'].$SubDir)) {
    mkdir($Config['Paths']['htdocs'].$SubDir, 0777);
  }
}
 
// :: Sync Files
$tmp_Counter = 0;
foreach ($Files['CSTRIKE']['FILES'] AS $Key => $Val) {
  if ($tmp_Counter !== 0 && ($tmp_Counter % 4) === 0) {
    echo '.';
  }
  $tmp_Counter++;
  $SubDir = substr($Key, strlen($Config['Paths']['cstrike']));
  if (!file_exists($Config['Paths']['htdocs'].$SubDir.'.bz2')) {
    if (!file_exists($Config['Paths']['htdocs'].$SubDir)) {
      copy($Key, $Config['Paths']['htdocs'].$SubDir);
      if ($Config['Bzip2']['Enabled'] === true) {
        $LastLine = system($Config['Bzip2']['Path'].' -9 '.str_replace(' ', '\ ', $Config['Paths']['htdocs'].$SubDir), $RetVal);
      }
    }
    else {
      if ($Config['Htdocs']['Override'] === true || $Val['Size'] !== filesize($Config['Paths']['htdocs'].$SubDir)) {
        unlink($Config['Paths']['htdocs'].$SubDir);
        copy($Key, $Config['Paths']['htdocs'].$SubDir);
        if ($Config['Bzip2']['Enabled'] === true) {
          $LastLine = system($Config['Bzip2']['Path'].' -9 '.str_replace(' ', '\ ', $Config['Paths']['htdocs'].$SubDir), $RetVal);
        }
      }
      else {
        if ($Config['Bzip2']['Enabled'] === true) {
          $LastLine = system($Config['Bzip2']['Path'].' -9 '.str_replace(' ', '\ ', $Config['Paths']['htdocs'].$SubDir), $RetVal);
        }
      }
    }
  }
  else {
    if ($Config['Htdocs']['Override'] === true && $Config['Bzip2']['Enabled'] === true) {
      unlink($Config['Paths']['htdocs'].$SubDir.'.bz2');
      copy($Key, $Config['Paths']['htdocs'].$SubDir);
      $LastLine = system($Config['Bzip2']['Path'].' -9 '.str_replace(' ', '\ ', $Config['Paths']['htdocs'].$SubDir), $RetVal);
    }
  }
}
unset($tmp_Counter);
if ($Config['Chmod']['Enabled'] === true) {
  system('chmod -R '.$Config['Chmod']['Access'].' '.$Config['Paths']['htdocs'], $RetVal);
}
if ($Config['Chown']['Enabled'] === true) {
  system('chown -R '.$Config['Chown']['User'].':'.$Config['Chown']['Group'].' '.$Config['Paths']['htdocs'], $RetVal);
}
echo "\n".'<<< DONE >>>'."\n";
echo "\n".'| INFORMATION ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|';
echo "\n".'| Script:         SRCDS FastDownload Syncronizer                  |';
echo "\n".'| Version:        1.0                                             |';
echo "\n".'| Author:         Andreas Glaser                                  |';
echo "\n".'| Website:        www.andreas-glaser.com                          |';
echo "\n".'| Creation Date:  2009-01-14                                      |';
echo "\n".'| Last Update:    2009-01-14                                      |';
echo "\n".'|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|'."\n";
 
function indexCstrike($Dir = NULL, $SubDir = 'subdir')
{
  global $Files;
  $Dir = $Dir.$SubDir.'/';
  $Files['CSTRIKE']['DIRS'][$Dir] = $Dir;
  if (file_exists($Dir)) {
    $handler = opendir($Dir);
    while ($file = readdir($handler)) {
      if ($file != '.' && $file != '..') {
        if (!is_dir($Dir.$file)) {
          $Files['CSTRIKE']['FILES'][$Dir.$file]['Size'] = filesize($Dir.$file);
        }
        else {
          indexCstrike($Dir, $file);
        }
      }
    }
    closedir($handler);
  }
}
 
function indexHtdocs($Dir = NULL, $SubDir = 'subdir')
{
  global $Files;
  if ($SubDir !== 'subdir') {
    $Dir = $Dir.$SubDir.'/';
  }
  $Files['HTDOCS']['DIRS'][$Dir] = $Dir;
  if (file_exists($Dir)) {
    $handler = opendir($Dir);
    while ($file = readdir($handler)) {
      if ($file != '.' && $file != '..') {
        if (!is_dir($Dir.$file)) {
          $Files['HTDOCS']['FILES'][$Dir.$file]['Size'] = filesize($Dir.$file);
        }
        else {
          indexHtdocs($Dir, $file);
        }
      }
    }
    closedir($handler);
  }
}
?>

Note: There is a file embedded within this post, please visit this post to download the file.

JaZz

SVN – Add all new files at once

Andreas Glaser — Wed, 11 Nov 2009 12:06:16 +0000

Unfortunately Subversion provides no inbuilt function to add all new files at once.
This however is a solution:

^?View Code BASH

1	svn status \| grep "^?" \| awk '{print $2}' \| xargs svn add

Enjoy,
JaZz

Ubuntu Linux – Changing file associations

Andreas Glaser — Thu, 22 Oct 2009 11:02:12 +0000

Every once in a while I’m asked how to change file associations in Ubuntu. It’s very simple and explained in two steps.

Step 1
Right mouse click on one of the files you want to associate with a specific program. Select “Properties” from the context menu.

Step 2
Jump to the “Open With” tab, select your preferred software and close the window.

From now on, when you double click files from the definied type, it automatically starts the previously selected software.

JaZz

5Loops.net – Upgrades

Andreas Glaser — Sun, 10 May 2009 18:40:59 +0000

I just upgraded my lightweight image loader a little.

www.5loops.net

Change log

Reduced upload procedure to one step
Updated archive page
Updated view page

Enjoy!
JaZz