Having problem compiling on linux

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It's the fourth day since I moved from Windows to Ubuntu (14.04) and I still am having problems setting up my development environment. I used to be a Delphi programmer, but now want to change to some other language, I've these in mind:
C#
C++
Python
D

I installed MonoDevelop, it installed the Mono Runtime too, I compiled a hello world, but when I locate the final exe file (yes it created an exe file), and open it, it tries to open the archive manager.

Then I try C++: the program compiles, I double-click the compiled file, and this message is shown:
There is no application installed for “executable” files. Do you want to search for an application to open this file?

So I open the Terminal, write the path to the compiled file, and press enter, this is what it says: Permission denied

How am I supposed to run my programs in Ubuntu? What is the Windows exe equivalent in Linux?

What I have tried:

I've tried compiling "Hello World"s from different languages but it just doesn't run on Linux.

Posted 5-Feb-16 20:58pm

Nafees Hassan

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Thomas Daniels · Accepted Answer · 2016-02-05T21:07:00

An easy way to run programs on Linux is from the terminal. Open it, navigate to the directory containing the compiled programs (using the cd command) and run them.

C# on Mono:

cd yourdirectory
mono compiledcsharp.exe

Compiled C++:

cd yourdirectory
./compiledcplusplus

[Edit]

If you want to make it more user-friendly by executing the executables using a double-click from the file manager, there is no other option than having them tweak configuration settings at the moment:
execute command - How do I run executable scripts in Nautilus? - Ask Ubuntu[^]
This is not the desired behavior, however, so there's a bug filed about it, but it hasn't been changed so far: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1433774[^]

[Edit #2]

If you get a permission denied message from the terminal, you need to change the permissions using the chmod command:
chmod Man Page | Bash | SS64.com[^]