Fortran How to run command line scripts from within Fortran 90

[AlphaBetaGamma96]

Hey!

I'm currently making a program which is a three body problem. I managed to get working results which I can plot to gnuplot. The question is, how can I write this within the program itself, so it can automatically plot the information to gnuplot if the user wants it to? (I'm being lazy :P)

I know I have to create a script, which I have done, but I don't know the function in Fortran 90 which will allow me to call it and then run it automatically. I believe there is a function along the lines of get_command_argument (I tried this but it isn't a function) or something similar to that.

Thank you for the help!
AlphaBetaGamma96

 

[jedishrfu]

Try this function:

https://gcc.gnu.org/onlinedocs/gfortran/SYSTEM.html

 

[Mark44]

Although not part of the Fortran 90 standard, many compilers have a system command that you can use to invoke a shell to run a script. See http://computer-programming-forum.com/49-fortran/c72094c2aee6cf13.htm.

 

[jim mcnamara]

When you do this on UNIX be sure to include a shebang as the very first line first column of your script. This makes the script run with /bin/whatevershell rather than /bin/sh. Which is the default whenever no shell is specified. Example:

#!/bin/bash

runs the bash shell to execute the script