I've decided to delete my linkedin account as I don't see any good in constact connectiodness and being part of many "social" networks which if one thinks in deeply are not social but anti-social.
You just stay at home staring at a screen and it will be like this until the end of your days and even worser for the generations to come. Computer revolution or digital revolution is in reality huge devolutin (devil-lution)
To delete the linkedin account I used a short tutorial provided by This post
TO reach to your Profile settings, use upper right corner of your browser and follow the menus:
Settings -> Account -> Close your account
Once, trying to delete your account, linkedin will try to manipulate you to stay in Linkedin by pushing some of your contacts, pointing how you will get disconnected from him.
I'm amazed how impudent this guys can be, actually, its not just them. If you have tried or deleted your facebook account before time you will have faced, exactly the same thing. A profile (person picture) which was recently browsed by you will be shown to you and be said you will be unable to connect with him any more. Well who cares if it is God's will we will connect again
The problem with us modern people is we're so deluded that we have started relying more on technology and human knowledge than to God. For most people who are atheists relying more on technology than on God for their lives seems reasanable However for us Christians putting more trust in technology than in Gods providence for us is sinful and deadly.
I'm starting to get the conclusion, non-technological societies are more happier than technological ones. In that sense, we the Bulgarians are blessed, because technology is not so widely spread.
I've recently wanted to use PHP's embedded system(""); – external command execute function in order to use ls + wc to calculate the number of files stored in a directory. I know many would argue, this is not a good practice and from a performance view point it is absolutely bad idea. However as I was lazy to code ti in PHP, I used the below line of code to do the task:
<?
echo "Hello, ";
$line_count = system("ls -1 /dir/|wc -l");
echo "File count in /dir is $line_count \n";
?>
This example worked fine for me to calculate the number of files in my /dir, but unfortunately the execution output was also visialized in the browser. It seems this is some kind of default behaviour in both libphp and php cli. I didn't liked the behaviour so I checked online for a solution to prevent the system(); from printing its output.
What I found as a recommendations on many pages is instead of system(); to prevent command execution output one should use exec();.
Therefore I used instead of my above code:
<?
echo "Hello, ";
$line_count = exec("ls -1 /dir/|wc -l");
echo "File count in /dir is $line_count \n";
?>
By the way insetad of using exec();, it is also possible to just use ` (backtick) – in same way like in bash scripting's “.
Hence the above code can be also written for short like this:
<?
echo "Hello, ";
$line_count = `ls -1 /dir/|wc -l`;
echo "File count in /dir is $line_count \n";
?>
The arcitle, points at few ways to DUMP the HTTP headers obtained from user browser.
As I'm not proficient with Ruby, Java and AOL Server what catched my attention is a tiny php for loop, which loops through all the HTTP_* browser set variables and prints them out. Here is the PHP script code:
The script is pretty easy to use, just place it in a directory on a WebServer capable of executing php and save it under a name like: show_HTTP_headers.php
If you don't want to bother copy pasting above code, you can also download the dump_HTTP_headers.php script here , rename the dump_HTTP_headers.php.txt to dump_HTTP_headers.php and you're ready to go.
Follow to the respective url to exec the script. I've installed the script on my webserver, so if you are curious of the output the script will be returning check your own browser HTTP set values by clicking here. PHP will produce output like the one in the screenshot you see below, the shot is taken from my Opera browser:
Another sample of the text output the script produce whilst invoked in my Epiphany GNOME browser is:
You see the script returns, plenty of useful information for debugging purposes: HTTP_HOST – Virtual Host Webserver name HTTP_USER_AGENT – The browser exact type useragent returnedHTTP_ACCEPT – the type of MIME applications accepted by the WebServerHTTP_ACCEPT_LANGUAGE – The language types the browser has support for HTTP_ACCEPT_ENCODING – This PHP variable is usually set to gzip or deflate by the browser if the browser has support for webserver returned content gzipping.
If HTTP_ACCEPT_ENCODING is there, then this means remote webserver is configured to return its HTML and static files in gzipped form. HTTP_COOKIE – Information about browser cookies, this info can be used for XSS attacks etc. HTTP_COOKIE also contains the referrar which in the above case is: __utmz=238407297.1332444980.1586.413.utmcsr=pc-freak.net|utmccn=(referral)
The Cookie information HTTP var also contains information of the exact link referrar: |utmcmd=referral|utmcct=/blog/
For the sake of comparison show_HTTP_headers.php script output from elinks text browser is like so:
* HTTP_HOST = www.pc-freak.net
* HTTP_USER_AGENT = Links (2.3pre1; Linux 2.6.32-5-amd64 x86_64; 143x42)
* HTTP_ACCEPT = */*
* HTTP_ACCEPT_ENCODING = gzip,deflate * HTTP_ACCEPT_CHARSET = us-ascii, ISO-8859-1, ISO-8859-2, ISO-8859-3, ISO-8859-4, ISO-8859-5, ISO-8859-6, ISO-8859-7, ISO-8859-8, ISO-8859-9, ISO-8859-10, ISO-8859-13, ISO-8859-14, ISO-8859-15, ISO-8859-16, windows-1250, windows-1251, windows-1252, windows-1256,
windows-1257, cp437, cp737, cp850, cp852, cp866, x-cp866-u, x-mac, x-mac-ce, x-kam-cs, koi8-r, koi8-u, koi8-ru, TCVN-5712, VISCII,utf-8 * HTTP_ACCEPT_LANGUAGE = en,*;q=0.1
* HTTP_CONNECTION = keep-alive One good reason, why it is good to give this script a run is cause it can help you reveal problems with HTTP headers impoperly set cookies, language encoding problems, security holes etc. Also the script is a good example, for starters in learning PHP programming.
One of the companies, where I'm employed runs nginx as a CDN (Content Delivery Network) server.
Actually nginx, today has become like a standard for delivering tremendous amounts of static content to clients.
The nginx, server load has recently increased with the number of requests, we have much more site visitors now.
Just recently I've noticed the log files are growing to enormous sizes and in reality this log files are not used at all.
As I've used disabling of web server logging as a way to improve Apache server performance in past time, I thought of implying the same little "trick" to improve the hardware utilization on the nginx server as well.
To disable logging, I proceeded and edit the /usr/local/nginx/conf/nginx.conf file, commenting inside every occurance of:
I expected, this should be enough to disable completely access.log, browser request logins. Unfortunately /usr/local/nginx/logs/access.log was still displaying growing with:
nginx:~# tail -f /usr/local/nginx/logs/access.log
After a bit thorough reading of nginx.conf config rules, I've noticed there is a config directive:
access_log off;
Therefore to succesfully disable logging I had to edit config occurance of:
access_log /usr/local/nginx/logs/access.log main
to
After a bit thorough reading of nginx.conf config rules, I've noticed there is a config directive:
access_log off;
Therefore to succesfully disable logging I had to edit config occurance of:
access_log /usr/local/nginx/logs/access.log main
to
access_log /usr/local/nginx/logs/access.log main
access_log off;
Finally to load the new settings, which thanksfully this time worked, I did nginx restart:
Acid3 Test is a group of browser compitability tests. Acid3 test is a good indicator on how Web ready is your browser.
Acidtest is part of the web standards project. Latest Firefox 9.0.1 passes the test on 100% (100/100).
I've tried it with Epiphany and it scored only 67/100, still I'm using Epiphany on daily basis and I'm quite happy with it.
The tests involved are testing browser for:
DOM
DOM2
Checks on HTML tables and forms browser rendering
SVG compitability testing
DOM1 and DOM2 compitability
Various ECMA Script Javascript compitability tests
Unicode (UTF-16 and UTF-8) browser compitability
XHML, SMIL, CSS, HTML compitability
Content-type image/png, text plain etc.
The Acid3 test is written itself in Javascript. It consists of 6 testing "stages" (buckets) upon which the browser tested is evaluated.
Each of the test is represented visually by a rectangle. If the a test stage is passed you see a new rectangle appearing in the tested browser.
In wikipedia, there is a thorough list with web browsers by type and engine and the level of support for the Acid3 test.
The test is of great use if you're web developer.
While checking a friend of mine's blog, I've seen a reference to a Windows program capable of revealing stored website passwords.
IE PassView is a small password management utility that reveals the passwords stored by Internet Explorer Web browser, and allows you to delete passwords that you don't need anymore. It supports all versions of Internet Explorer, from version 4.0 and up to 9.0. Ie PassView is quite a good one for crackers, who would like to steal some lame poor Windows IE user facebook,gmail, yahoo etc. passwords here is a link to IE Passview's download page
Since some time, I don't know exactly where, after some updates of my WordPress running on a small server with FreeBSD 7.2. I've started getting a lot of Apache crashes. Often the wordpress scripts stopped working completely and I got only empty pages when trying to process the wordpress blog in a browser.
After a bunch of reading online, I've figured out that the cause might be PHP APC stands for Alternative PHP Cache .
I was not sure if the PHP running on the server had an APC configured at all so I used a phpinfo(); script to figure out if I had it loaded. I saw the APC among the loaded to show off in the list of loaded php modules, so this further led me to the idea the APC could be really causing the unexpected troubles.
Thus first I decided to disable the APC on a Virtualhost level for the domain where the crashing wordpress was hosted, to do I placed in the VirtualHost section in the Apache configuration /usr/local/etc/apache2/httpd.conf the following config directive:
php_flag apc.cache_by_default Off
These get me rid of the multiple errors:
PHP Warning: require_once() [function.require-once]: Unable to allocate memory for pool. in /usr/local/www/data-dist/blog/wp-content/plugins/tweet-old-post/top-admin.php on line 6
which constantly were re-occuring in php_error.log:
Further after evaluating all the websites hosted on the server and making sure none of which was really depending on APC , I've disabled the APC completely for PHP. To do so I issued:
echo 'apc.enabled = 0' >> /usr/local/etc/php.ini
Similarly on GNU/Linux to disable globally APC from PHP only the correct location to php.ini should be provided on Debian this is /etc/php5/apache2/php.ini .
I needed to add to a wordpress based website Google maps location pictures with Google Maps Zoom In / Out controls.
I've seen plenty of plugins available that said to to this but none of them really worked fine for me. Either the plugins I checked in wordperss.org was too complex to set up and required a Google API registration or was marked as Broken (not working).
Finally to add the geographic locations taken from maps.google.com I used the embed code generated directly from maps.google.com.
But that was not the end of my WordPress Google Maps struggles. What followed was rather ridiculous, it seems since some time Google removed the pinning of a location searched for. Moreover the easy old way to simply pin a location on the map is also, gone.
Hence here is what I had to do to pinpoint location on the Google map of my searched country destination:
1. To be able to pinpoint the location, I had to login to my gmail
2. Go to http://maps.google.com in browser
3. Press on My Places button
4. Click on Create map and fill in the Title and Description dialogs
5. The Privacy and Sharing radio button should be selected
6. Click on Done and Save buttons
7. From the left top corner inside the Google map image to select the baloon picture (Add a Placemark) 8. Choose the exact desired placemark type and color from the next appearing dialog
9. Choose the location I want to pin on the map
I've created also a small Video tutorial just for fun for all those who want to see the pin a location with a baloon on the google map tutorial, here is the video as well:
For all people who can't properly see the .mov video here is link to the video created with recordmydesktop on my Linux showing how the baloon pinning inside a map can be done.
One server recently installed with Qmail + Vpopmail and Squirrelmail had just been reported to me that the webmail is failing to properly login existent users on the server via the IMAP protocol.
I've checked on port 143 to see if couriertpcd process is properly listening with netstat -tlnp as well as used telnet to check if I can normally connect with telnet to the imap port and it seemed there is no issue with IMAP
Further on I checked /var/log/mail.log and there I found the following error message popping up:
Aug 17 08:56:27 mail-serv imapd: LOGIN FAILED, user=hipo@mail-serv.com, ip=[::ffff:127.0.0.1]
Aug 17 08:56:27 mail-serv imapd: authentication error: Connection refused
Aug 17 08:56:29 mail-serv imapd: Connection, ip=[::ffff:127.0.0.1]
Aug 17 08:56:29 mail-serv imapd: authdaemon: s_connect() failed: Connection refused
Aug 17 08:56:29 mail-serv imapd: [Hint: perhaps authdaemond is not running?]
The error was shown each time I do get a failure in Squirrelmail in my browser to connect to IMAP with the error: ERROR: Connection dropped by IMAP server.
As the log revealed the courier-authdaemond was not up and running on the system. I thus launched it :
I've later on figured out the strange, was caused because of a server reboot, during boot process authdaemond did not properly load up, therefore to prevent future problems like this one, I've put authdaemond and /etc/init.d/imap scripts to load up via /etc/rc.local :
I've been assigned the task to add on one of the qmail powered servers I administrate about 50 email addresses via command line.
Each email addresses was required to be configured to have the same mail password.
Adding the email addresses via an interface would be a killing time consuming task and will probably require at least 1 hour of time to add the emails with qmailwebmin, qadmin, qubit or the other vpopmail qmail web administration interfaces available nowdays.
To solve the task, I've used a line oner bash shell script which reads all my 80 emails from a file and adds them with vpopmail's command line tool vpasswd on the mail server.
Here is the one liner shell script I've written to solve the task:
debian:~# while read line; do vadduser $line Email_Pass_Phrase; done < email_list_file.txt
In above's code I've used the email_list_file.txt file is a text file on the server and contains list of all my 50 email addresses, where each line in the file contains one email. The Email_Pass_Phrase is actually the password I've set for all the new email addresses being created with vpasswd
That's all now the 50 email addresses on the server are created and I've saved at least one hour of boring repeating actions in the browser
Bio: I am a Free Software enthusiast, hobbyist and a unix geek. Presently my competences are into the field of System administration.
I am also a devoted Orthodox Christian. I have deep interests into
religion in general and in Christianity in particular.
I am a big fan of all kind of Unix like systems like: GNU/Linux, FreeBSD, DOS and other various obscure computing. I'm also interested into philosophy and business administration.
My hobbies include playing old arcade games, trips to a new places,
preferably nature filled places, Mountain, Waterfalls, Woods etc.
In my free time I also like watching movies: Mostly spiritual movies, or movies with a deeper meaning.Currently I am a student in Arnhem Business School in the stream of HRQM (Human Resources and Quality Management).
Herein my blog you'll find mostly stuff about my unix/linux adventures, personal life, thoughts on life, religion, philosophy and art.
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