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I hope my message will get read soon and somebody will give me a solution. I use fortran to do simulation and gfortran is the compiler I use. Recently I migrated from Ubuntu 10.10 to 12.10.

After installing gfortran then I tried to compile and run my fortran programs then the problem started. I successfully compiled the program but I am unable to execute it. (I work in a directory in shared partition, not in HOME directory). When I compiled the program and run it within HOME directory, everything worked fine. On my Ubuntu 10.10, I was able to compile and execute fortran program from everywhere not only within HOME directory.

This is what I do for compiling and executing fortran program:

gfortran hello.f90 -o hello # to compile it
./hello # to execute it

I'm blind about PATH or anything like it (this has to do with it, I suspect) so please give me direction.

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Do you get any sort of message when attempting to run the executable in the shared partition? A likely cause would seem to be that the partition is mounted with the noexec option. – chronitis Dec 18 '12 at 9:33

On the file that you produced do:

ls -l ./hello 

It's likely the file does not have execute permissions. You may see something like this:

-rw-rw-r-- 1 mark mark 2 Dec 18 11:37 hello

but what you need is something like this:

-rwxrwxr-x 1 mark mark 135163 Dec 18 11:39 hello

To get to this state use the command:

chmod gu+x ./hello

This command gives group and user execute permissions. Then try the above ls command again. See if you can execute it now.

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