fake-shell.c

#include <stdio.h>
#include <string.h>

#define BUFFER 4096
#define RUN_FOREVER 1

int main(int argc , char * argv[] )
{
    char input[BUFFER];

    //Get always a command line from the user.
    while(RUN_FOREVER)
    {
        char *stringBeforeAmpersand = NULL;
        char ch;

        if (isatty(0))
        {
            // input is from terminal
            // need to put something here
        }

        printf("$ ");
        memset(input, '\0', BUFFER);

        scanf("%[^\n]",input);
        scanf("%c",&ch);

        if(0 == strcmp(input, "exit"))
            break;

        //Separate the command according to the "&".
        stringBeforeAmpersand = strtok( input, "&");
        fprintf (stderr, "%s\n",stringBeforeAmpersand);
    }
}