How do I pass values to an Extensible Markup Language (XML) file from shell script? I want to pass value to an XML file from shell script so as to replace values in some of the tag, but the results I have been getting is not what I intend. How do I use the replace command in the script? N:B the values to be pass are likely to change?

Why is Ruby not installing on my Laptop? I just started learning Ruby general purpose programming Language and installing it on my laptop is posing a lot of challenges. I have tried many implementations of Ruby and none seem to be working on my laptop. What implementation of Ruby can be installed without Xcode?

I am using MATLAB 2009a on Windows 7 32 bit. I am trying to run this program that includes a mexmaci file, a mexw32 file and a cpp file. I tried to run the program but got an error that said, "Could not detect a compiler on local system which can compile the specified input file(s). Error using mex (line 115) Unable to complete successfully". How can I execute my program correctly? Is the error because of files that are not supported by MATLAB?

How do I make an HTML FORM to work in PHP? Am new in PHP, I designed a website with a what you see is what you get software (WYSIWYG) but now I need a form in PHP, I have written the HTML form and I have put the contact PHP script as the value for the action attribute. I have also written the code for the submitted date using PHP $_GET and $_POST. My problem is getting the mail function to work. How do I send the data to the mail using the mail function?

How do I convert PHP code to cfm? I have a code written in PHP which is working perfectly, but the client wants the code to be converted to CFM. I have given the PHP code to a programmer, but the returned code is somehow bundled. What approach is the best in converting the PHP code to CFM? What is the difference between PHP and CFM?

Why is my MPI program not compiling? Please I am trying to run a Message Passing Interface (MPI) program with C language. I have installed GNU Compiler Collection compiler and the openmpi libraries. I am running Ubuntu and Netbeans interactive development environment (IDE). My challenge is that after including “mpi.h” in my header file and compiling the application, the complian i get is: “fatal error : cannot find file mpi.c”.

Why is my visual studio expressing for desktop installation taking longer than expected without finishing installation? Whenever I try to install this visual studio software, the installation will go on for a longer time until I force shut my system. The worrying thing about the installation is that, anytime I start the installation, the system usually stops working and hang.

How do I start programming in Matlab? The new IT manager in our company is a Matlab die hard, almost all its code is in Matlab, but i can only write in C++ language. With many code sent to me daily in Matlab, so I think I need to learn Matlab. Please, is there a converter from Matlab to C++, if not, what option do I have?. 

What is the best way of customizing web2py pages? the challenge i have with web2py is in the fact that I cant customize the look and responsiveness of my web2py pages using HTML and PHP. I have downloaded many layouts, but I don’t like most of these downloaded layouts. Also, I don’t know how to design one.

How do I create a Java ME application with color? Please am having a serious challenge in getting a j2me app with color to work, after hours of internet searching, I got information that I can use Lightweight User Interface Toolkit widget, Java ME or Codenameone. which of these three is more efficient?  which one was used for the user interface of a java application like Gmap?