/* signal handling complete */

src/main.c

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <signal.h>
 
 #include "commands.h"
 #include "built_in.h"
 #include "utils.h"
+#include "signal_handlers.h"
 
 int main()
 {
   char buf[8096];
   
   while (1) {
+    /* buf reset to all '0' */
+    memset(buf, 0, 8096);
+    
+    /* signal handling */
+    signal(SIGINT, (void*)catch_sigint);
+    signal(SIGTSTP, (void*)catch_sigtstp);
+    
     fgets(buf, 8096, stdin);
 
     struct single_command commands[512];

src/signal_handlers.c

 #include "signal_handlers.h"
+#include <signal.h>
 
 void catch_sigint(int signalNo)
 {
-  // TODO: File this!
+  // Ctrl + C
+  signal(SIGINT, catch_sigint);
 }
 
 void catch_sigtstp(int signalNo)
 {
-  // TODO: File this!
+  // Ctrl + Z
+  signal(SIGTSTP, catch_sigtstp);
 }