Some nice tips in an article that caught my attention, Most of the tips are general, but some are specifically suited to programmers/engineers in situations with long compile/simulation phases (compiling is the act of building an executable, simulation is the act of running it to completion).
Monthly Archives: February 2009
Installing Python & PyGTK on Mac OsX
Posted by aibrahim
on February 25, 2009
20 comments
Recently i have been asked to develop an application that will work on Linux, and Mac os, so i started developing it on my Ubuntu, i chosed Python as the programming language and PyGTK as the GUI for it.
The application worked fine on my Ubuntu, but when i moved it to Mac OSx (Leopard), i had a problem importing the PyGTK module and the program GUI didn’t run. so i tried to install PyGTK from sources with all its dependencies, but after spending a day doing so i ended up with many errors in compiling the dependencies and finding them.
after some search i found out that i can do this using MacPorts.
so here is the steps i followed :
- Install X11 http://guide.macports.org/#installing.x11
- Install Xcode tools http://guide.macports.org/#installing.xcode
- Install MacPorts http://guide.macports.org/#installing.macports
- Make sure the paths are configured in your shell profile http://guide.macports.org/#installing.shell
- Restart your shell, and follow the next commands :
1- Install Python
sudo port -v install python25
2- Install Python select
sudo port -v install python_select
3- Activate our installed python version
sudo python_select python254- Install pygtk
sudo port -v install py25-gtk
5- Install some gnome themes and engines
sudo port -v install gnome-themes sudo port -v install gtk-nodoka-engine sudo port -v install gtk-smooth-engine sudo port -v install gtk2-aurora sudo port -v install gtk2-clearlooks sudo port -v install gtk2-extra sudo port -v install gtk2-industrial sudo port -v install gtk2-murrine
6- Install theme switch
sudo port -v install gtk-theme-switch
7- Select which theme to be used by your applications by running the theme switch
switch2
Now you can have the applications you develop using python and pygtk running smoothly on mac os leopard.
How to enable Remote Desktop on Ubuntu from Terminal
Posted by aibrahim
on February 24, 2009
No comments
The remote desktop function in ubuntu is a nice handy one, to enable it from terminal
first ssh to the server you wanna remote desktop, then install tightvncserver
sudo apt-get install tightvncserver
then run it
tightvncserver
it will ask you to set a password for using this option and it will return the x desktop id.
Now go to Applications -> Internet ->Remote Desktop Viewer, and enter the address of the machine followed by the x desktop id like this :
servername:1
where 1 is the x server id.
—-
here is a good comparison between remote desktop apps.
Install Yum on RHEL4
Posted by aibrahim
on February 23, 2009
No comments
In my company they purchased some software from Autodesk that comes on Redhat Enterprise 4, i needed to install some packages on the system for the use of some internal applications, instead of installing packages and all the dependencies, i though using automatic installer like yum would be better, below is the steps to have yum installed on your RHEL4 machine :
1. Install rhel4
2. Download Yum rpm package
wget http://gd.tuwien.ac.at/opsys/linux/yum/2.0/yum-2.0.5-1.noarch.rpm
3. Install the package
rpm -Uvh yum-2.0.5-1.noarch.rpm
4. Edit repositories location
nano /etc/yum.conf
Change the baseurl in [base] to
http://mirror.centos.org/centos/4/os/$basearch/
Change the baseurl in [updates] to
http://mirror.centos.org/centos/4/updates/$basearch/
5- Install the full yum with all its dependencies.
yum install yumBuild MySQL insert Query from Array that contains fields and values
Posted by aibrahim
on February 22, 2009
1 comment
The following function takes table name, and array where its keys are the table fields and it’s values are the values to insert in each field, it constructs the MySQL Query based on the input and executes it to insert the data.
function insertRow($table_name, $input_array){ $link = mysql_connect(SERVER, USER, PASS); mysql_select_db(DATABASE, $link); $SQL = "INSERT INTO $table_name "; $fields = "("; $values = "("; foreach ($input_array as $k => $v) { $fields .= "`$k` ,"; $values .= "'$v' ,"; } $fields .="#"; $values .="#"; $fields = explode(",#", $fields); $fields = $fields[0]; $values = explode(",#", $values); $values = $values[0]; $fields .= ")"; $values .= ")"; $SQL .= $fields . " VALUES " . $values; mysql_query($SQL); mysql_close($link); }
List array Recursively in PHP
Posted by aibrahim
on February 17, 2009
5 comments
Code :
function listArrayRecursive($array_name, $ident = 0){ if (is_array($array_name)){ foreach ($array_name as $k => $v){ if (is_array($v)){ for ($i=0; $i < $ident * 10; $i++){ echo " "; } echo $k . " : " . "<br>"; listArrayRecursive($v, $ident + 1); }else{ for ($i=0; $i < $ident * 10; $i++){ echo " "; } echo $k . " : " . $v . "<br>"; } } }else{ echo "Variable = " . $array_name; } }
Usage :
$ages = array( "ahmed" => "25", "mohamed" => "35", "group" => array("omar" => "15", "abdalla" => "20", "sub group" => array("john" => "10", "peter" => "20"))); listArrayRecursive($ages);
Output will be printed array in indented way.
ZendCasts – Free Zend Framework Screencasts
Posted by aibrahim
on February 3, 2009
2 comments
A really good Zend Framework Resource that has been posted in the ZF mailing lists couple of days ago.
very usefull
URL : www.ZendCasts.com