[evojiang]

Dear All,

I have a problem with running external shell script inside OpenFOAM, and I spent several days on it but still not fixed.

Here is the problem.

I wrote a C++ code to read the data from a local .txt file.
Here is the .cpp file:
#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
string line;
size_t pos = 0;
string token;
const char * V;

cout << "Starts" <<endl;

ifstream vMyFile;
vMyFile.open("/Users/Desktop/laminarVortexShedding/postProcessing/probes/0/U", std::fstream::in);
if (vMyFile.is_open())
{
int i = 0;

while (! vMyFile.eof() )
{
getline(vMyFile,line);
if (i >= 3)
{
if (line.find("(") == 28)
{
pos = line.find("(");
token = line.erase(0, pos);
// pos = token.find(" ");
// token = token.substr(0, pos);
//cout << "i = " << i << token << endl;
}
}
i++;
}
vMyFile.close();
V = token.c_str();

cout << "Last iteration velocity: " << V << endl;

}
else cout << "Unable to open file11111" << endl;


ofstream vEstimate_file ("/Users/Desktop/laminarVortexShedding/U_estimate");
if (vEstimate_file.is_open())
{
vEstimate_file << V;
vEstimate_file.close();
}
else cout << "Unable to open file22222" << endl;

return 0;
}



And then I made a shell script which compile the C++ code and ./run the program.

#!/bin/bash
# My first script

g++ -std=c++11 -o runf main.cpp
./runf

In the terminal, I type ./shell.sh, everything works fine and I get the result I want.

However, once I do the exact same thing in the OpenFOAM terminal window(Because OF on Mac is based on Docker? therefore I have to run it in a different terminal window, which has ofuser@98032082cf7e on the left.), it shows cannot open file.

Unable to open file11111
Unable to open file22222


Can anyone give me some help on this problem? Why it won't work on the OpenFOAM terminal?

Thanks a lot!