Re: [LINUX_Newbies] What is bat com exe in Linux?

Do Mär 28 19:19:49 2013
Good evening.
Thank You for help.


>
> An exe is an executable program, under linux any file can be marked as
> executable (including shell scripts), every file has a set of
> 'permissions' attached to it, you can see them by typing ls -al at a
> command prompt, one is called the execute permission or 'x'. you can set
> it by typing chmod +x filename. this will make any file executable.
> *
> This I did not understand.
>
> Example:
> I am creating in DOS a programe in Pascal.
> I call it doit.pas.
> Then I compile it and there is a file calles doit.exe.
>
> Now I call doit.exe and it is running.
>


Hi,

Pretty much the same process under linux, you write the pascal in a file
called doit.pas and then compile it.
*
OK


Most compilers on linux (gcc, fpc,
gpc) support an option to name the output file.
*
OK

This is because often
unixy programs push there output to the screen (stdout) so that it can
be used with all the standard cli tools.
*
OK

The compilers often output the
compiled program into a file called a.out*
YES
this I swa:

out

which is executable (you just
type ./a.out and it runs.
*
OK

So if you add an option to the compiler line
"-odoit" it will output the compiled file as doit which you run by
typing "./doit"
eg.
fpc doit.pas -odoit
./doit

*
OK

But when I
comile with Xubuntu
the file doit.pas to doit.out
it only is able to run with a Debian Linux.
Is this right?



As linux does not really care about file extensions
*
Yes

there is no reason
not to add a '.exe' or whatever to the end but it is not necessary.
eg.
fpc doit.pas -odoit.exe
./doit.exe
*
OK


The only thing to go wrong is a file not being executable, you get a
permission denied message and need to type:-
chmod +x doit (doit.exe)

Hope this clarifies things a little
*
Yes.

Thank You.

It is like gif

I can name pic.gif pic.gif and pic
but it is more clear to name it pic.gif
for myself.


But Gimp can understand pic also.


"Gnu Compiler Collection"
Is this a good idea to use it as beginner?


Regards
Sophie





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