Tackling a DoS attack
Linux
Written by Websmurf   
Thursday, 16 September 2010

If your apache server is slow and you believe it might be subject of a DoS attack, netstat is a good tool to check if this is true.

The following command will list all ipadresses with connections to your server and show how many connections are active at this point.

netstat -nap|grep \:80 | grep ESTA | awk '{print $5 }' | cut -d':' -f1 | sort | uniq -c



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Synchronising folders over SSH with rsync
Linux
Written by Websmurf   
Thursday, 16 September 2010

Rsync is a great tool to easily syncronise a folder on one server with another folder on another server.

Simply type on your command line:

rsync -r -a -v -e "ssh -l root" --delete /home/mysite/www/ 192.168.1.51:/home/mysite/www/

After entering this command, the server will ask you for a password for the root user on the second server. Enter this and your good to go.

 For a complete reference of these parameters, see: http://linux.about.com/library/cmd/blcmdl1_rsync.htm

 



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ffmpeg: error while loading shared libraries: libxvidcore.so.4: cannot enable executable stack as sh
Linux
Written by Websmurf   
Monday, 25 May 2009

If you are getting the following error:

ffmpeg: error while loading shared libraries: libxvidcore.so.4: cannot enable executable stack as shared object requires: Permission denied

 While trying to execute FFmpeg and running selinux on debian, do the following to solve: 

chpax -p /usr/bin/ffmpeg 


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Jquery and Thickbox noConflict mode
JavaScript
Written by Websmurf   
Saturday, 22 March 2008

It took me quite a while to figure this out, so here is a solution for anyone who finds it useful :)

If you are running Jquery in noConflict mode, the Thickbox script will not work anymore. Now, there are two solutions.. I'll leave it up to you which you like best.

The first is to place this in your head section:

(function($) {
$(function() {
// content of Thickbox script
});
})(jQuery);

It won't be possible to use the tb_init function and others because they are executed within the function.  Which can be quite annoying if you're combining the output of ajax with Thickbox.

 

Another solution is, to open the uncompressed version of Thickbox, and to replace all occurrences of $ with jQuery or the prefix you are using.
Then you will be able to use the normal functionality of Thickbox..

It will take up a bit more space though... 



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Last Updated ( Saturday, 22 March 2008 )
 
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