Academic-Shell-System/Std_Shell.c at main · levleyfer/Academic-Shell-System · GitHub

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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <stdlib.h>
#include <sys/stat.h>

void Error(char* msg) {
    perror(msg);
    exit(1);
}

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

//////////////////////// Initializing ///////////////

   char scan[100];
   char*args[3];
   int ids;

   memset(scan, 0, sizeof(scan));

////////////////// student funcs /////////////////////

   while(1==1){

     printf("StdShell> ");
     scanf("%s",scan);

     if (strcmp(scan,"ShowCourses")==0){
       if ( ( ids = fork() ) == 0 ) {
         execl("/home/braude/ShowCourses","ShowCourses",0);
         Error("failed execl ShowCourses\n");
       }
       wait();
     }

     else if (strcmp(scan,"GetNewCourse")==0){
       if ( ( ids = fork() ) == 0 ) {
         execl("/home/braude/GetNewCourse","GetNewCourse",0);
         Error("failed execl GetNewCourse\n");
       }
       wait();
     }

     else if (strcmp(scan,"MakeSchedule")==0){
       if ( ( ids = fork() ) == 0 ) {
         args[0]="/home/braude/MakeSchedule";
         args[1]=argv[1];
         args[2]=NULL;
         execv("/home/braude/MakeSchedule",args);
         Error("failed execl MakeSchedule\n");
       }
       wait();
     }

     else if (strcmp(scan,"GetSchedule")==0){
        if ( ( ids = fork() ) == 0 ) {
         args[0]="/home/braude/GetSchedule";
         args[1]=argv[1];
         args[2]=NULL;
         execv("/home/braude/GetSchedule",args);
         Error("failed execl GetSchedule\n");
       }
       wait();
     }

     else if (strcmp(scan,"LogOut")==0){
       execv("/home/braude/LogOut",NULL);
       Error("failed execv LogOut\n");
     }
     else
       printf("Not Supported\n");

     memset(scan, 0, sizeof(scan));
   }

////////////////////// close and clean //////////////////////////////

   return 0;
}