Are system() calls evil?

Question

I am designing an C++ app that, among other things, executes a few scripts every now and then. The app should be efficient and preferably platform independent.

The i

Answer 1

Whatever command you want to execute just store that in a file c.txt. Pass that file to the execl() like as done below.

fd = open("c.txt", O_CREAT | O_RDWR, 00777);
write(fd,arr,sizeof(arr));
if(fork() == 0)
{
    execl("/bin/sh", "sh", "-c","sh c.txt", (char *) 0);
}