Thread: Is there a way to make the following code portable?

....It is quite portable inside the unix land....but I'm looking for a way to make it more standard.
The two following functions are 1.constructor for a disk class (for a virtual machine) and a way to execute shell directory commands of the host system.

Code:

disk::disk(string name,vm* owner)
{
    /// Check if name is already in the global list


    ofstream new_disk("disks/"+name+"_prop");
     
    new_disk<<"Name: "<<name<<endl;
    system(("mkdir disks/"+name).c_str());
    
    pwd="disks/"+name+"/";
    disk_of = owner;
    //(*disk_of).shell(); //Works
}

Code:

void disk::command(std::string com)
{
    istringstream in(com);
    string test;
    in>>test;
    if(test=="cd")
        {
            in>>test;
            pwd+=test; //pwd is a string containing the present working dir to carry over from calls to system();
            system(("cd "+test).c_str());
        }
    else
    {
        system(("cd "+pwd+" && "+com).c_str());
    }
}